1243ZP20Q0008 La Mina Solicitation_Rev 02-14-20.pdf

La Mina & Big Tree Trail Assessment, Trail Bridges Assessment & A-E Repair & Re- Construction Design Project

February 2020 Rio Grande, PR

DESIGN PROJECT SCOPE

La Mina and Big Tree Recreation Trail and Trail Bridge Design Services

El Yunque National Forest Rio Grande, PR

El Yunque National Forest La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

SECTION A: SOLICITATION/CONTRACT FORM

1. Under Separate Cover

PAY ITEM DESCRIPTION PAY UNIT EST. # OF

PAY UNITS TOTAL PRICE

001 Site Visit Lump Sum 1 $ -

002 Engineering Report Lump Sum 1 $ -

003 Geotechnical Report Lump Sum 1 $ -

004 Bridge Layout/Conceptual Design Alternatives Lump Sum 1 $ -

005 Trail Assessment and Recommendations Lump Sum 1 $ -

006 Construction Cost Estimate Lump Sum 1 $ -

007 Design Development (Section 2.7.B) Lump Sum 1 $ - 008 Construction Documents (Section 2.7C) Lump Sum 1 $ - 009 Completed Construction Documents ( Section 2.7D) Lump Sum 1 $ -

SECTION B: SCHEDULE OF ITEMS

LA MINA AND BIG TREE TRAIL ASSESSMENT, TRAIL BRIDGES ASSESSMENT AND A-E REPAIR AND RE-CONSTRUCTION DESIGN

PROJECT

GRAND TOTAL CONTRACT AMOUNT:

GENERAL:

This Bid Schedule is setup to correspond with the document entitled Statement of Work for A-E Services for La Mina and Big Tree Trail and Trail Bridges Assessment and Re-Construction to be located at the El Yunque National Forest in Rio Grande, Puerto Rico

The proposal will have Line Item-specific values as broken down below for costs set to correspond with the entire duration of the contract. This is for proposal evaluation. Please divide out a proportionate share o these costs into each respective Line Item value. All Line Items lump sum values unless otherwise specified.

SUB-TOTAL COST

ADDITIVE ITEMS BID SCHEDULE

**These items will be added based on availability of funds and may be purchased as a sum or in part. Items listed below are in order of highest priority from top to bottom.

SUB-TOTAL COST

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

SECTION C: DESCRIPTION/SPECIFICATIONS/STATEMENT OF WORK

USDA, FOREST SERVICE (R-8)

USDA FS – EL YUNQUE NATIONAL FOREST

LA MINA AND BIG TREE TRAIL ASSESSMENT, TRAIL BRIDGES ASSESSMENT, AND A-E REPAIR AND

RE-CONSTRUCTION DESIGN PROJECT

Estimated Construction Cost: $900K - $1.3 Million

Period of Performance: (155 days)

1.0 GENERAL INFORMATION

1.1 PROJECT SUMMARY:

A. An A-E Firm shall provide professional engineering services necessary for a 30%, 60%, 90%, and 100% design and development of contract documents, ready for advertisement to include: drawings, specifications, Schedule of Items, and independent cost estimates, for the reconstruction of the Big Tree Trail and the La Mina Trail and associated trail bridges. All final 100% planset drawings shall be stamped by

Professional Engineer licensed in Puerto Rico.

B. Performance Period: Shall be as shown in reflected suggest timeline attachment.

C. All existing bridges repairs and A-E recommended bridge replacements structures shall be designed and stamped by a Professional Engineer licensed in Puerto Rico.

All trail bridges (includes: complex and minor trail bridges) condition assessment and inspection shall be done by a competent License Professional Engineer certified in National Bridge Inspections Standards Regulation (NBIS) with technical bridge inspection experience. Many of the trail bridges may be in good condition. However trail bridges and structures proposed for replacement and/or repairs as identified in

A-E’s condition assessment and inspection report shall be identified in the A-E’s

30% Engineering Report submittal with a License Professional Engineer stamp.

D. There is a total of two (2) existing complex trail bridges, and nine (9) existing minor trail bridges located on the La Mina Trail. Please refer to Section 2.6 of this document, FSH 7709.56b Chapter 80 - Trail Bridge Design Requirements for

Agency-specific definitions.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

E. There is a total of two (2) existing complex trail bridges, and one (1) existing minor trail bridge located on the Big Tree Trail.

F. In the A-E provided Plans, Specifications, and Estimate (PSE) package, the A-E is to determine the best economical method of importing material to project site and utilizing existing suitable material.

G. All A-E travel to site shall be incidental to their proposal. The Government will not be responsible for any additional trips A-E may need or require to visit site multiple times. Notify and coordinate with Contracting Officer (C.O.) all access needs to project site in advance for safety purposes.

H. The estimated construction cost is an estimate only. A-E proposal shall be final and shall not change based on the requirements shown within this Statement of Work. If the A-E believe that they are requested to do anything not within the Statement of

Work or work outside of this Statement of Work, the A-E shall take no action and immediately notify the CO and Contracting Officer Representative (COR) in writing.

I. The A-E Contractor shall submit a breakdown of their proposed estimate to support the attached A-E Contract Package per awarded Schedule of Items.

J. The Forest Service will provide copies of the Emergency Relief for Federally Owned

Roads Program (ERFO) Damage Survey Reports (DSRs), for each trail and a condition survey conducted for the La Mina and Big Tree Trail. DSR documented damage must be tracked by Disaster event number as this work will be funded through the FHWA ERFO Program. The A-E’s proposed contract package Schedule of Items

90% and 100% deliverable shall distinguish ERFO-related construction from non-

ERFO construction (Ex. galvanized and wood handrails, concrete and wood handrail posts, landslides, fill slopes stabilization etc) in order to facilitate tracking of disaster related costs. A copy of the DSR is attached.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

SITE VISIT MEETING:

A. A Kick-Off site visit meeting and site inspection with existing government furnished topographic site plan survey in-hand will be conducted on date as specified and agreed upon by the Contracting Officer and A-E... A-E representatives shall meet the El Yunque NF staff at El Portal Visitor Center PR 191 km 4.4 Rio Grande, PR

00745 to be escorted to the project area. Representatives are expected to provide their own hard hat and appropriate field clothing, boots and gear. Trail maybe considered arduous hiking for users, so caution is advised.

B. Questions asked during the meeting may not be answered immediately, but will be documented, and a written summary of the questions and responses will be posted accordingly.

1.2 DESCRIPTION OF EXISTING TRAILS:

A. The Big Tree Trail (EYNF Trail #13) is approximately 0.831-mile in length. The trail is accessed from the Big Tree Trailhead parking area of PR 191 and extends to the intersection of EYNF Trail #24 and the La Mina Trail (EYNF Trail #12) at La Mina

Falls. The Big Tree Trail is currently designated as a Class 4 Hiker/Pedestrian trail. The

Big Tree Trail is not listed as eligible for listing on the National Register of Historic

Places. The trail varies in width from approximately 24 to 36 inches and the surfacing varies from poured in-place concrete to stone pavers inlaid into concrete. Grade generally ranges from 0 to 12 percent although some short segments likely exceed 12 percent. Stairs are present in some of the steeper segments of the trail. Handrail is either comprised of 2-inch dia. galvanized steel pipe inset into concrete posts, or wood 2-inch by 6- inch handrails mounted on 4-inch square wood posts. There’s multiple locations of damaged, missing, and deteriorated handrails that shall be replaced and/or repaired as recommended by the A-E.

B. There are two (2) complex trail bridges and one (1) minor trail bridges located on the

Big TreeTrail (refer to attached government furnished topographic survey). The terrain is steep in some segments with side slopes nearly vertical in some of the damage areas.

Rock outcroppings occur at a few locations, but generally do not drive the trail alignment.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

C. Big Tree Trail damage which resulted from hurricanes in 2017 includes broken, damaged or missing trail tread, handrails and handrail posts; slumps and or erosion on the downslope side undermining the trail subgrade, fill slope failures; and, multiple landslides have taken out segments of trail. This trail damage has been documented in a

Federal Highway Administration (FHWA) Damage Survey Report (DSR) and has been approved for funding under the Emergency Relief for Federally Owned Roads Program

(ERFO) program. Outside of the ERFO damage areas, the condition of the trail is poor, with surfacing that is slippery, steep grades and narrow with few opportunities for passing.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

D. The La Mina Trail (EYNF Trail #12) is approximately 0.732-mile in length. The trail is accessed from the Palo Colorado picnic area. The trail extends from a concrete bridge at

Palo Colorado and ends at the intersection of EYNF Trail #24 and the Big Tree Trail

(EYNF Trail #13) at La Mina Falls. The La Mina Trail is currently designated as a Class 4

Hiker/Pedestrian trail. The trail varies in width from approximately 24 to 36 inches and the surfacing varies from poured in-place concrete slab to stone pavers inlaid into concrete.

Although modified from the original construction, the trail was originally constructed by the Civilian Conservation Corps (CCC) and is eligible for listing on the National Register of Historical Places. Grade generally ranges from 0 to 12 percent although some short segments may exceed 12 percent. Stairs are present in some of the steeper segments of the trail. Handrail is generally comprised of 2-inch galvanized steel pipe inset into concrete posts.

E. There are two (2) complex trail bridges and nine (9) minor trail bridges located on the La Mina Trail

(refer to attached government furnished topographic survey). The terrain is steep in some segments with side slopes nearly vertical in some of the damage areas. Rock outcroppings adjacent to the trail are common and rather than altering these outcroppings, the trail alignment follows the landscape.

F. La Mina Trail damage documented in the ERFO DSR for this trail includes broken, damaged or missing trail tread, handrails and handrail posts; slumps and or erosion on the downslope side undermining the trail subgrade; erosion and undermining of bridge footings, and a landslide. Outside of the ERFO damage areas, the condition of the trail is poor, with poor alignment in some areas, surfacing that is slippery, steep grades and narrow with few opportunities for passing.

G. The Forest Service will provide copies of the Emergency Relief for Federally Owned

Roads Program (ERFO) Damage Survey Reports for each trail and a condition survey conducted for the Big Tree Trail.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

1.3 BACKGROUND INFORMATION AND DATA:

A. Survey control and an existing topographic survey will be furnished by the Forest

Service and provided to the A-E contractor upon award.

B. The Damage Survey Report (DSR) for each trail is attached.

C. A condition survey of the Big Tree trail is attached.

D. The trail design shall conform to the U.S. Customary Specifications for Construction and Maintenance of Trails.

La Mina and Big Tree trail both TMO are designated as a Class 4 Designed Use of

Hiker/Pedestrian trail. A-E will be responsible to design and meet current US Forest

Service Class 5 trail design standards and maintain a 36-inch tread width or greater as appropriate wherever possible.

Standard Trail Plans, Specifications, and Pay Items can be found at the link referenced below:

https://www.fs.fed.us/managing-land/trails/trail-management-tools/trailplans

Trail Design Parameters can be found at the link referenced below:

https://www.fs.fed.us/recreation/programs/trail-management/documents/trailfundamentals/03-TrailDesignParaHandout_Sec508_01-24-

17_150dpi.pdf

It will be the responsibility of the A-E to create pay items, detail drawings, supporting planset drawings, and specifications that may not be listed as referenced section above.

E. The trail bridge’s design shall conform to U.S. Forest Service Handbook FSH

7709.56b – Transportation Structures Handbook, Chapter 80 – Trail Bridge

Design. See supporting awarded solicitation attachment FSH 7709.56b - Chp 80 -

Trail Bridge Design.

F. El Yunque NF has developed a landslide and watershed condition assessment report with shapefiles, and a “Best Management Practices” document which address soils and watershed protection. These documents will be provided to the A/E contractor upon award.

https://www.fs.fed.us/recreation/programs/trail-management/documents/trailfundamentals/03-TrailDesignParaHandout_Sec508_01-24-17_150dpi.pdf https://www.fs.fed.us/recreation/programs/trail-management/documents/trailfundamentals/03-TrailDesignParaHandout_Sec508_01-24-17_150dpi.pdf https://www.fs.fed.us/recreation/programs/trail-management/documents/trailfundamentals/03-TrailDesignParaHandout_Sec508_01-24-17_150dpi.pdf

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

1.4 DESIRED CONDITIONS:

A. The desired outcome of the La Mina Trail and associated bridges reconstruction, repair, and/or replacement, all trail re-construction, all trail surface, all stairway widening in applicable areas etc is to:

1. The beginning of La Mina Trail begins at trail alignment stationing 0+00.00 on the government furnished topographic survey sheet 5 of 39 (C-102). A-E shall include adjacent concrete stairway in trail centerline alignment as shown and identified on sheet 5 of 39.

2. Improve user safety

3. Maintain historic character and aesthetics associated with the original existing Civilian

Conservation Corps construction

4. La Mina main entrance stairway tread, and enhancement that shall include assessment and design.

The contractor shall conduct trail condition assessment, report, and a detailed design repair for the

La Mina Trail and the La Mina Trail stairway starting @ Palo Colorado picnic area as shown in attached furnished topographic survey (trail alignment begins at Palo Colorado picnic area but A-

E shall include adjacent sidewalk as shown on government provided drawings sheet 5 of 39). Trail and stairway assessment report shall reflect existing conditions and address any improvements by improving user experience by addressing any repairs, capacity, widening, drainages issues, tread, grade, and alignment issues. Finished and final assessment report shall address existing and proposed repairs with new design. A-E shall ensure to maintain historic character and aesthetics and strive to provide for continuity of experience, more uniform materials and appearance and designs that are used throughout both sections of trail.

5. Improve user experience by addressing capacity, tread, grade and alignment issues

6. La Mina Trail removal of culverts and design of concrete open drainage low water crossings.

Open drainages designs shall be identified in A-E drawing planset by the stationing and coordinates (Northing, Easting) with a supporting detail drawing specifically designed to fit field conditions. Each open drainage for construction shall be identified in drawing by location, coordinates, and detail drawing to fit field conditions or special field conditions. If these are historic then we would be changing the design and can be considered an adverse effect. Open drainage shall be designed with the intent to make it safer for the public and require less maintenance.

7. Ensure sustainability through resisting degradation in a wet, tropical environment and requiring a low level of maintenance

8. Landslide design repairs

9. Meet current US Forest Service Class 5 trail design standards and maintain a 36-inch or greater as appropriate, such as landings, pop outs or other opportunities tread width wherever possible.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

10. Assessment and professional engineering report of all existing reinforced poured in-place bridges and wooden bridges that may include repairs and/or replacement as recommended by the A-E

Professional Engineer (knowledgeable, competent, and certified in NBIS for bridge inspection with their P.E. license). All trail bridges (includes: complex and minor trail bridges) condition assessment and inspection shall be done by a competent License Professional Engineer certified in

National Bridge Inspections Standards Regulation (NBIS) with technical bridge inspection experience. A-E shall recommend appropriate repairs and/or bridge replacements as applicable and shall include design for repairs and/or bridges replacement. Bridges and structures proposed for replacement and/or repairs shall be identified in the A-E’s 30% Engineering Report submittal with License Professional Engineer Stamp.

11. Any trail bridge that has a clear span 20 feet or less, are considered a minor trail bridge. Any trail bridges structures that has a clear span greater than 20 feet are considered a complex trail bridge.

12. A-E shall remove and design to replace the existing wooden deck trail bridge #6 (as shown on govt. furnished survey sheet 7 of 39) with a new concrete minor trail bridge or equal. A-E shall design new minor trail bridge #6 conforming to the requirements of the Statement of Work

Section(s) 2.2 B9, 2.3 2, and 2.4B.

B. The desired outcome of the Big Tree Trail reconstruction is to:

1. The beginning of Big Tree Trail begins at trail alignment stationing 38+65.28 on the government furnished survey sheet 22 of 39 (C-119) and end at trail stationing 82+56.00 sheet 39 of 39 (C-

136).

2. Improve user safety

3. Maintain historic character and aesthetics and strive to provide for continuity of experience, more uniform materials and appearance and designs that are used throughout both sections of trail

4. Improve user experience by addressing capacity, tread, grade and alignment issues

5. Ensure sustainability through resisting degradation in a wet, tropical environment and requiring a low level of maintenance

6. Meet current US Forest Service Class 5 trail design standards and maintain a 36-inch tread width or greater as appropriate wherever possible.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

7. The A-E shall include a finished design of five (5) interpretive sites showing appropriate turnout stationing and/or coordinates upon topographic survey, dimensions, existing ground subgrade grade based on survey data, finished surface, balanced cuts and fills, identified catchpoints, and furnish supporting specifications.

Preliminary proposed interpretive turnouts locations are shown in the government furnished topographic survey in which the A-E shall verify the proposed location to see if it’s the best location. If A-E proposes to shift an interpretive site to another location or best location that the A-E see fits, then the COR shall be notified in writing for approval. USFS will select a minimum of five (5) of the potential sites to implement based on recommendations and drawings from A+E 60% deliverable. All three (3) interpretive sites excluding two (2) shall be designed to have enough space to fit groups of 10-12 trail users off of the main trail alignment and shall be able to contain the interpretive panel(s). The two (2) excluded interpretative sites shall be developed to fit 20-25 users as shown on government furnished survey sheet 29 of

39 and the existing structure as shown on sheet 35 of 39 (both shall be designed to fit 20-25 users). The A-E finished interpretive sites design shall be identified in topographic survey by the stationing and coordinates (in all nodes) with supporting drawing with details to specifically fit field conditions.

8. Big Tree Trail removal of culverts and design of concrete open drainage low water crossings. Open drainages designs shall be identified in A-E drawing planset by the stationing and coordinate with a supporting detail drawing specifically designed to fit field conditions. Each open drainage for construction shall be identified in drawing by location, coordinates, and detail drawing to fit field conditions or special field conditions. Open drainage shall be designed with the intent to make it safer for the public and require less maintenance.

9. Landslide design repairs

10. Assessment and professional engineering report of all existing reinforced poured in-place bridges and wooden bridges that may include repairs and/or replacement as recommended by the A-E

Professional Engineer (knowledgeable, competent, and certified in NBIS for bridge inspection with their P.E. license). All trail bridges (includes: complexed and minor trail bridges) condition assessment and inspection shall be done by a competent License Professional Engineer certified in

National Bridge Inspections Standards Regulation (NBIS) with technical bridge inspection experience. A-E shall recommend appropriate repairs and/or bridge replacements as applicable and shall include design for repairs and/or bridges replacement. Bridges and structures proposed for replacement and/or repairs shall be identified in the A-E’s 30% Engineering Report submittal with License Professional Engineer stamp.

11. Any trail bridge that has a clear span 20 feet or less, are considered a minor trail bridge. Any trail bridges structures that has a clear span greater than 20 feet are considered a complexed trail bridge.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

2.0 SCOPE OF WORK

2.1 GENERAL REQUIREMENTS:

A. This project shall include all necessary trail and bridge condition assessments and design in its entirety necessary to complete a contract package for complete reconstruction of the

La Mina Trail, Big Tree Trail, La Mina Falls Bridge, and all other trail bridges and structures present on each of these trails, and decommissioning of approximately three (3) identified existing rain shelters (Refer to government furnished topographic for identified shelters as shown on sheet C-104, C-115, C-124). Portions of each of these two trails, and associated bridges were damaged due to hurricane events and this damage is documented in FHWA Disaster Survey Report (DSRs), which are attached for reference (damaged sites exact location identified in attached DSR may not match government furnished topographic survey stationing). In addition, trail reconstruction is needed in areas outside of the disaster-related damaged areas to address needed improvements in trail grade, alignment and surfacing to improve safety and user experience. The trail design shall encompass the full length of the La Mina and Big Tree trails and shall use uniform trail design parameters and design approach to provide a seamless transition between reconstructed segments both within and outside of disaster designated areas. Professional services to address the disaster damage covered under the DSRs, and trail reconstruction outside damaged areas will consist to two parallel design processes that will be combined into a single contract package. Professional services, for field data collection, and design associated with the DSR documented damage must be tracked by Disaster event number as this work will be funded through the FHWA ERFO Program. Contract documents, including A-E’s 90% and 100% deliverable Schedule of Items, and costs estimates must distinguish ERFO-related construction from non-ERFO construction in order to facilitate tracking of disaster related costs.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

2.2 TRAIL AND BRIDGE CONDITION ASSESSMENT, AND ENGINEERING REPORT:

A. The A-E shall conduct physical inspections of the La Mina Trail, Big Tree Trail and all associated trail bridges and trail structures to collect updated field data sufficient for development of design concepts. Data collection will aid in differentiation of ERFO document damage sites from remainder of improvements. Data elements may include, but will not be limited to, existing constructed features, incongruences with trail standards, widening and/or passing area opportunities, potential reroute alignments, photographs, and measurements. The CO and COR shall be notified in writing if areas of storm damage are encountered which have not been noted in the DSR report, but that may potentially be eligible for ERFO.

B. An Engineering Report shall be prepared which:

1. Summarizes the condition assessment.

2. A-E may determine in their engineering report that trail segments (La Mina Trail and Big Tree

Trail) may not necessarily need reconstruction or replacement because current condition and structural integrity is acceptable and would meet desired condition. A-E’s engineering assessment and report shall reflect such findings.

3. Notes storm damage not included in the DSR which may be eligible for ERFO funding.

4. Provides trail reconstruction recommendations designed to meet the desired conditions, including, but not limited to, proposed P-line alignment, surfacing materials, proposed reroute alternatives, trail tread enhancements, construction limits and areas of trail widening, stairway widening and stairway tread enhancements, landslide repairs, fill slope failures, safety railing and other considerations for drainage and ditches, safety and sustainability.

5. Where a trail or trail bridge reroute is proposed, provide more than one alternative, if feasible. Otherwise, provide rationale of why only one reroute alternative is feasible.

6. A-E shall include methods for decommissioning three existing rain shelters in their engineering report. The shelters are identified in the government provided topographic survey and have concrete slab finished floors (FF) with wood roof framing and metal roofing (some floor slabs may stay in-place or shall be removed as identified in govt.

furnished topographic survey. Refer to government furnished survey for clarity of existing shelter slabs). The shelters must be demolished and the debris hauled off and transported to a municipal landfill, or approved recycler for disposal.

7. Addressing landslides and multiple landslides proposed design repairs.

8. All damages in its entirety shall be reflected in A-E Engineering Report.

9. Costs for ERFO related damages shall be provided separately from non-ERFO costs

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

10. All engineering reports of the trail bridges for repairs and/or replacement shall include all trail bridges (complex and minor trail bridges) condition assessment and inspection which shall be done by a competent License Professional Engineer with technical bridge inspection experience. Engineering report shall be sufficient for development of design concepts. Bridge assessment and engineering report, shall reflect inspection of existing bridge which may include: span, deck width out-to-out, approach width, conditions of substructure and superstructure, type of substructure and superstructure material, bridge rating, and address any improvements by improving user experience by addressing any repairs needed, capacity, substructure or superstructure repairs and/or bridge replacement, and alignment issues. Finished and final bridge engineer assessment report shall address existing and proposed professional engineering recommendation but shall ensure to maintain historic character and aesthetics. The A-

E shall provide a design recommendation and corresponding rationale. Upon acceptance of the Engineering Report, the El Yunque NF will select and approve selected bridge reconstruction and/or replacement alternative(s) and A-E’s proposed methods to advance into the design process. This will be issued as a memorandum to the Contractor from the Contracting Officer and will serve as the Contractor’s authorization to proceed into the design phase. The 100% A-E finalized engineering report shall be stamped by license Professional Engineer.

A-E shall provide bridge structure alternatives for all proposed bridge replacements, which include but are not limited to, concrete, steel, fiber-reinforced plastic (FRP) etc

(no wood structures are allowed). Alternative development should be in accordance with requirements outlined in U.S. Forest Service Handbook FSH 7709.56b –

Transportation Structures Handbook, Chapter 80 – Trail Bridge Design per attachment.

All bridge engineering reports and recommendations shall include constructability, desired condition conformance, and a conceptual plan (plan and elevation view) with a cost estimate.

11. Upon acceptance of the Engineering Report, the El Yunque NF will select and approve the trail reconstruction method, any reroutes and selected bridge reconstruction alternative(s) to advance into the design process. This will be issued as a memorandum to the Contractor from the

Contracting Officer and will serve as the Contractor’s authorization to proceed into the design phase.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

2.3 TRAIL BRIDGE DESIGN(S):

1. A-E shall evaluate three (3) bridge layout alternatives for the La Mina Falls Bridge

(located at the waterfalls and identified on government furnished topographic survey sheet C-117 and C-118) that explore variations in bridge siting (location, alignment and elevation) with the goals of improving sustainability of the structure and improving user experience. Provide an assessment of the bridge siting alternatives, and the recommended design and rationale for selection of this alternative with estimated construction cost of each bridge alternative. The A-E three bridge alternatives shall include a conceptual drawing of a plan view and elevation view of each proposed bridge alternative with proposed survey horizontal alignment and proposed survey vertical curve profile utilizing the government furnished site survey data.

Upon acceptance of the three (3) bridge layout alternatives for the La Mina Falls Bridge

(located at the waterfalls), the El Yunque NF will select and approve the selected La

Mina Falls Bridge reconstruction alternative to advance into the design process. This will be issued as a memorandum to the Contractor from the Contracting Officer and will serve as the Contractor’s authorization to proceed into the design phase. The A-E proposed structures can be modern but shall maintain historic character and aesthetics and strive to provide for continuity of experience, more uniform materials and appearance and designs that are used throughout the trail.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

2. All bridges located on the La Mina and Big Tree Trail (reinforced poured in-place concrete bridges and wood bridges) for bridge replacement (For bridge replacements, all information below shall be submitted) and/or repairs (For repairs, below information as applicable) as recommended by the A-E, the A-E shall provide all to the government as shown below with registered Puerto Rico professional engineering stamp:

Geotech Report -- geotechnical investigation conducted to support the proposed design and associated recommendations related to design and construction methods

Hydrologic and Hydraulic (H&H) Analysis -- (Use the HEC-RAS, “Hydrologic

Engineering Center – River Analysis System” or a similar program that may be available to model the water surface profile through the bridge opening. Bridge openings should be sized to pass the 100-year flood event with an appropriate freeboard of 3-ft and considering debris and sediment passage and blocking.

Refer to attachment FSH 7709.56b - Transportation Structures handbook –

Chapter 60 – Hydraulics and Watershed Protection)

Code Analysis

Dead Load

Pedestrian Live Load-- Conform to AASHTO’s LRFD Guide Specifications for

Design of Pedestrian Bridges. A-E shall design to live load conforming to

AASHTO specifications which require a minimum live load of 100 pounds per square foot (psf) for elevated viewing platforms.

Fatigue Load

Seismic Load

Wind Load

Foundation design as required by soil characteristics with attention to allowable settlement soil bearing capacity as applicable and considering site conditions noted in the contractor’s geotechnical investigation.

Stationing of bridge ends, elevations including footing, bearing pads (if applicable), deck, and top of walls elevations; bearing details with orientation, expansion joints, type and size of foundations, depth, structural members, connections, and all foundation apparatus for

100% finished bridge design ready for construction.

Design using appropriate Loading Combinations conforming to AASHTO’s LRFD Guide

Specifications for the Design of Pedestrian Bridges

All bridge calculations and foundation calculations shall reference AASHTO

LRFD and shall be stamped by Professional Engineer and submitted to COR.

All calculations shall be in U.S. Customary Units.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

2.4 DESIGN AND CONTRACT PACKAGE PREPARATION

A. The Contractor will prepare the design and a contract package comprised of all construction drawing, details, specifications and construction submittal list necessary for trail reconstruction, bridge replacement, and/or bridge repairs as described in the design selection memorandum. The Contractor will prepare and submit plans at the 30%, 60%, 90% and 100% design level to the Contracting Officer which will be distributed to the review team for comments. Reviews may include comments by but not limited to:

Regional Bridge Engineer review, Regional Trail Manager, and Forest review. Refer to

Section F - Deliveries of Performance for tentative government review time.

B. Plan sheets shall be 11” x 17” in size and drawings shall be scaled appropriately for display. Drawings shall be in English and U.S. Customary Units and use an appropriate engineering scale. Plan sets shall include at a minimum the following:

1) Title Page

2) Vicinity Map

3) Show all Control Points and Survey Data Table

4) Horizontal alignment and Vertical Profile of existing trail and proposed trail alignment and profile including all re-routes

5) Proposed trail repairs and enhancements with supporting detail drawing and identifying each location in reference to site survey and field

6) Showing proposed new edge of trail on horizontal alignment with supporting cross sections and identifying locations of new proposed edge of trail in reference to site survey and field

7) Trail realignment in A-E specified areas with finished grade, finished assemblies, finished corridors and supporting cross sections at a minimum of

50-ft intervals to support A-E’s proposed re-alignment areas and at all repair, widening, and re-construction areas.

8) Plan and Profile/Elevation of existing and proposed trail alignment with finished corridors and supporting cross sections.

9) Proposed repair of stairway, addressing stairway treads, with supporting detail drawing and identifying each location in reference to site survey and field

10) All new drainages and proposed new ditchline design with supporting detail drawings

11) Handrails replacement and repairs with supporting detail drawing and identifying each location in reference to site survey and field

12) All Bridge(s) horizontal alignment and vertical profile and proposed horizontal and vertical profile.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

13) Bridge(s) Substructure/Foundation Detail Drawing specific to proposed location

14) Bridge(s) Superstructure Detail Drawing specific to proposed location

15) Bridge(s) Deck & Approach Detail Drawing specific to proposed location

16) Trail Cross-Sections with cut/fill and all catchpoints and finished corridors

17) Interpretive turnouts with cuts and fills. A-E shall show interpretive turnouts alignment with cuts and fills balanced, finished corridors and all catchpoints

18) Detail drawings with cross sections

19) Landslide design repairs, retaining wall, gabion baskets, or as equal as proposed by the A-E

20) Open concrete drainage low water crossings that will be replacing culverts. A-

E shall show alignment and profile with existing and finished elevation of open drainage

21) Erosion Control Plan with Supporting Drawings

22) Notes pages as applicable and other supporting information in addition to design drawings necessary for a full and complete construction plan set

C. The Contract package shall utilize and reference the U.S. Customary Specifications for

Construction and Maintenance of Trails which can be found at the link below:

Standard Trail Plans, Specifications, and Pay Items

Additional project- specific supplemental specifications will need to be developed by the contractor to support the construction methods and material and this is considered incidental to the Design.

D. The A-E shall develop an engineering estimate that includes all labor, equipment materials, transportation costs, mobilization and overhead costs necessary for construction. A-E shall take into consideration of future contractor site accessibility. The appropriate local Davis-

Bacon wage rates shall apply. While market research will be required in development of the Engineering Estimate, no guarantees of purchase shall be made and all cost data shall be kept confidential.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

E. A-E shall create a Schedule of Items with all pay line items broken down (cubic yards, span, each, linear feet, acre, square yard, square foot, ton) for project construction in its entirety. The A-E’s proposed contract package. 100% finished Project Schedule of Items shall be submitted in excel document ready for contracting procurement.

2.5 REVIEW MEETINGS:

A. A Project Kick-Off meeting may take place in-person or virtually, at the discretion of the

El Yunque NF and the CO. A site visit is included in the 30% submittal.

B. The A-E is cautioned that if they believe the action required by any comment exceeds the requirements of the SOW, they shall take no action and immediately notify the CO and COR in writing.

C. After each submittal (per timeline shown in awarded attached Contract Schedule), the

A/E will be furnished design review comments from the designated CO and COR. COR will compile review comments from various reviewers involved in the review process. Reviews may include comments by but not limited to: Regional Bridge Engineer review, Regional

Trail Manager, and Forest review. Refer to Section F - Deliveries of Performance for tentative government review time.

D. All A-E questions and responses shall be written in RFI’s for tracking and filing purposes.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

2.6 GOVERNMENT FURNISHED INFORMATION

A. The Government shall provide the following:

1) Planset template for design plans

2) Existing Site Topographic Survey (2018 AutoCAD Civil 3D file)

3) FHWA ERFO Damage Survey Report (DSR) for Big Tree and La Mina Trails

4) Big Tree Trail Condition Survey

5) Project Vicinity and Site Map

6) FSH 7709.56b Chapter 80 - Trail Bridge Design Requirements

7) FSH 7709.56b Chapter 60 - Hydraulics and Watershed Protection

8) BMPs Erosion Control Plan Guidelines

9) FSH 7709.56b Chapter 100 - Trail Bridge Operation

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

2.7 DELIVERABLES

A. CONCEPTUAL DESIGN PHASE (30% SUBMITTAL)

1. The Contractor shall submit all documentation to the CO or their designated representative. 30% Submittal shall include:

a. Site Visit.

b. Engineering Report (All applicable as Referenced in Section 1.4 and 2.2).

c. Geotechnical Report: A full geotechnical report is required for all new replacement bridges. If applicable, a Geotechnical report shall be included in repair for bridges and/or major structures if applicable to the repairs. (All required as referenced in Section 2.3.2).

d. Hydrologic and Hydraulic (H&H) Analysis – A full H&H Analysis is required for all new replacement bridges. If applicable, an H&H report shall be included in repair for bridges and/or major structures if applicable to the repairs. (All required as referenced in Section 2.3.2).

e. Three (3) Bridge Layout and Conceptual Design Alternatives: For the La Mina Falls Bridge (located at the waterfalls which is identified as Bridge No. 11 in government furnished topographic survey) the type of each proposed bridge structure, type of materials of each proposed bridge structure, a conceptual drawing of a plan view and elevation view of each proposed bridge alternative with proposed survey horizontal alignment to fit real time field conditions, and proposed survey vertical curve profile to fit field conditions utilizing the government furnished topographic survey, with an estimated construction cost of each bridge alternative. The A-E proposed alternative bridge structures can be modern but shall maintain historic character and aesthetics and strive to provide for continuity of experience, more uniform materials and appearance and designs that are used throughout the trail. (All required as referenced in Section 2.3.1).

f. Trail Assessment and Recommendations: For each trail, examine and assess in its entirety. Identify and recommend for each section, both trail and any associated railings (in approximate LF), portions suitable for:

1) Surface cleaning and/or basic refinishing for lengths of to remain in service ‘as-is.”

2) Repairs and modifications (including widening) necessary to existing lengths of trail to be rehabilitated.

3) Complete replacement of missing trail or sections of trail that are not in salvageable condition.

g. Construction Cost Estimate: For all suggested repairs and options, provide an Order of Magnitude Cost

Estimate suitable for budget validation.

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

B. DESIGN DEVELOPMENT DOCUMENTS (60% SUBMITTAL)

1. The Contractor shall submit all documentation to the CO or their designated representative. 60% Submittal shall include:

1) 60% Submittal of all miscellaneous trail bridge designs and repairs, trail reconstruction designing, trail and stairway tread enhancements design, stairway repairs & design, trail drainages and new ditchline design, handrails and posts repairs and/or replacements & design, open drainage low water crossing, trail cross sections, trail alignments and trail vertical profiles, all new finished trail design reflecting the finished trail corridor, all trail widening shall have supporting trail finished corridor with finished contours to support it, all supporting detail drawings, trail widening design, all applicable notes, designing of approved trail re-routes, all fill slope and cut slope damaged erosion repairs design, and all land slide design repairs. All repairs and replacement design detail drawings shall be identified by the stationing and coordinates for constructability (All as referenced in Section 1.4 and Section 2.4 B)

2) 60% Submittal shall include A-E proposed location of all five (5) Interpretive Sites. Three (3) shall be designed to accommodate 10-12 users and two (2) shall be designed to accommodate 20-25 users. (All as referenced in Section 1.4.B.8).

3) 60% Submittal shall include decommissioning of approximately three (3) identified rain shelters. (All as referenced in Section 2.1.A).

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

C. CONSTRUCTION DOCUMENTS (90% SUBMITTAL)

1. The Contractor shall submit all documentation to the C.O. or their designated representative. 90% Submittal shall include:

a. All 100% complete bridge structure calculations (All required as referenced in Section 2.3 1)

b. 90% Submittal Design of Approved La Mina Falls Bridge (located at the waterfalls). All required as referenced in Section 2.3.1.

c. 90% Submittal of all miscellaneous trail bridge designs and repairs, trail reconstruction designing, trail and stairway tread enhancements design, stairway repairs & design, trail drainages and new ditch line design, handrails and posts repairs and/or replacements & design, open drainage low water crossing, trail cross sections, trail alignments and trail vertical profiles, all new finished trail design reflecting the finished trail corridor, all trail widening shall have supporting trail finished corridor with finished contours to support it, all supporting detail drawings, trail widening design, all applicable notes, designing of approved trail re-routes, all fill slope and cut slope damaged erosion repairs design, and all land slide design repairs. All repairs and replacement design detail drawings shall be identified by the stationing and coordinates for constructability (All as referenced in Section 1.4 and Section 2.4 B)

d. 90% Submittal A-E Interpretive Sites Design with supporting detail drawings, all node coordinates, cut and fill balance, FFE etc. (All as referenced in Section 1.4.B.8).

e. 90% Submittal shall include decommissioning of approximately three (3) identified rain shelters in its entirety. (All as referenced in Section 2.1.A).

f. 90% Submittal Full Planset Drawings in pdf format (All required as referenced in Section 2.4.B and

2.4.C).

g. 90% Submittal Specifications and Special Project Specifications. (All required as referenced in Section

2.4.C).

h. 90% Submittal Engineering Estimate for Construction (All required as referenced in Section 2.4.D).

i. 90% Submittal Schedule of Items (All required as referenced in Section 2.4.E).

La Mina and Big Tree Trail Assessment, Trail Bridges Assessment and A-E Repair and Re-Construction Design Project

D. COMPLETED CONSTRUCTION DOCUMENTS (100% SUBMITTAL)

1. The Contractor shall submit all documentation to the C.O. or their designated representative. 100% Submittal shall include:

a. 100% Submittal Design of Approved La Mina Falls Bridge with Professional Engineer Stamp (located at the waterfalls). (All required as referenced in Section 2.3.1).

b. 100% Submittal of all miscellaneous trail bridge designs and repairs, trail reconstruction designing, trail and stairway tread enhancements design, stairway repairs & design, trail drainages and new ditch line design, handrails and posts repairs and/or replacements & design, open drainage low water crossing, trail cross sections, trail alignments and trail vertical profiles, all new finished trail design reflecting the finished trail corridor, all trail widening shall have supporting trail finished corridor with finished contours to support it, all supporting detail drawings, trail widening design, all applicable notes, designing of approved trail re-routes, all fill slope and cut slope damaged erosion repairs design, and all land slide design repairs. All repairs and replacement design detail drawings shall be identified by the stationing and coordinates for constructability. (All as referenced in Section 1.4 and Section 2.4.B).

c. 100% Submittal A-E Interpretive Sites Design with supporting detail drawings, all node coordinates, cut and fill balance, FFE etc. (All as referenced in Section 1.4).

d. 100% Submittal shall include decommissioning of approximately three (3) identified rain shelters in its entirety. (All as referenced in Section 2.1.A)

e. 100% Submittal Full Planset Drawings in pdf format with Professional Engineer Stamp. (All required as referenced in Section 2.4.B and 2.4.C).

f. 100% Submittal Specifications and Special Project Specifications with Professional Engineer Stamp.

(All required as referenced in Section 2.4.C).

g. 100% Submittal Engineering Estimate for Construction. (All required as referenced in Section 2.4.D).

h. 100% Submittal Electronic Schedule of Items. (All required as referenced in Section 2.4.E).

i. 100% Submittal Electronic Drawings (dwg files) in 2018 AutoCAD Civil 3D (No Exceptions).

j. Load Rating for new structure using LRFR.

k. QA/QC Documentation.

l. All submittals will be electronic (via email, flash drive or other approved method) for all items. Design drawings shall be scaled for plotting on pdf 11” x 17” sheets.

February 2020

SECTION D: PACKAGING AND MARKING

1. Not Used

SECTION E: INSPECTION AND ACCEPTANCE

1. Progress Payments A. Design Phase: Progress payments during the design phase of the work will be based on submission, review, and acceptance of design deliverables.

B. Construction Phase: Progress payments during construction will be based on the percentage of work completed on items listed on the approved schedule of values. Actual construction completed and in place will form the basis for payment. Verification of the % complete shall be initiated by the DC under the direction of a representative of the CO, unless the CO waives this requirement in a specific instance. The DC shall make the computations for payment based on the governments verification of work completed and in place for any periods for which progress payments are requested.

C. The DC shall furnish the originals of all field notes and all other records relating to the basis for payment, to the CO, who shall…