1198-25 final.pdf

MEMORANDUM

DATE: February 20, 2025

TO: Prospective Bidders

FROM: Kafi Howard / Carolyn A. Howard, PE

SUBJECT: Harding Avenue Drainage, Sidewalk, and Roadway Improvements Invitation to Bid – Supplemental Information

The information provided in this memorandum is to be considered in your bid and supersedes notes and other data provided on the plans. The bidder shall notify the town if there are any conflicts between the contents of this memorandum and other bid documents.

1. Base bid: The base bid shall include improvements from Station 9+86.14 to approximately 31+00. Refer to the plans for the phasing delineation.

2. Additive Bid Item No. 1: This lump sum bid shall include improvements from approximately Station 31+00 to 39+50. Refer to the plans for the phasing delineation.

3. Additive Bid Item No. 2: This lump sum bid shall include improvements from approximately Station 39+50 to 49+82. Refer to the plans for the phasing delineation.

4. Rock Excavation Allowance: The Bid Form includes an allowance for rock excavation in the amount of $25,000 to be paid based on the unit cost established by the contractor and measurements completed by the town engineer. The excavation must be measured by the town engineer prior to backfilling. Any rock excavations backfilled prior to review and measurement by the town engineer is ineligible for payment.

Rock that can be excavated by typical excavation equipment (ex. backhoe, dozer, etc.)

is considered regular excavation and therefore ineligible for payment with the rock excavation allowance.

5. Incidental Costs: Items will be paid for at the contract unit price as noted in the Bid Form for each item specified. The contract unit price shall include full compensation for furnishing all materials, labor, tools, equipment and incidentals necessary to complete the work, including, but not limited to, excavation (except rock excavation), testing, backfill material, compaction, dewatering, disposal of excess or unsuitable material, sheeting and shoring, necessary bedding material, and other appurtenances.

6. Power Poles: Virginia Tech Electric Service (VTES) will relocate its utility poles that are in conflict with the project, within the project limits. The contractor will be responsible for coordinating the construction schedule with VTES, other utility providers, and the town.

Harding Avenue Drainage, Sidewalk, and Roadway Improvements Invitation to Bid – Supplemental Information February 20, 2025

7. Parcel 004251 (709 Harding Avenue): The contractor shall remove, store and re-lay bricks in the driveway. The contractor shall be responsible for the replacement of any bricks damaged during construction.

8. Parcel 013332 (300 Sutton Place): The existing tree located within the right-of-way at Station 31+08 shall remain undisturbed throughout construction.

9. Underground Detention Facility: The material is not required to be HDPE. Refer to Figure 1.

10. Storm Sewer Materials: Reinforced concrete pipe (RCP) or High-density polyethylene (HDPE) can be used.

11. Working hours: Allowable working hours within the Town of Blacksburg are 07:00 to 19:00 seven (7) days a week. Night work will only be allowed as approved by the Town Manager. A request for night work must be submitted to the Town Engineer a minimum of four (4) business days prior to the proposed night work.

12. Maintenance and Protection of Traffic: The contractor will be responsible for the development and implementation of maintenance of traffic phasing and plans. Refer to the attached Section 0347100 Maintenance of Traffic specification for details.

Note: Sheets 12 through 13B, as provided in the previous bid package, are no longer included in the plans.

13. Additional Landscaping (Vista Pointe): The contractor is to furnish and install the additional landscaping shown on Figure 2 from the Street and Sidewalk Plan (page 4A, sht. 11 of 59).

14. Utility Test Holes: The contractor will be responsible for test holes to confirm the location and depth of utilities in conflict with proposed infrastructure and coordinate any required utility relocations with the owner and the town.

15. Pavement Transitions: All areas excavated deeper than 2 inches below existing pavement surface and within the clear zone, at the conclusion of each workday, shall be backfilled to form a 6:1 wedge desired (4:1 minimum) against the pavement surface for the safety and protection of vehicular traffic. All costs for placing, maintaining, and removing the wedge shall be included in the price bid for other items in the contract and no additional compensation will be allowed.

16. Final Surface Asphalt Pavement Course: The final surface course is not to be placed until such time that continuous operations are possible from beginning to end the of the project (or phase of the project) and permanent pavement markings can be placed to provide a continuous final course as applicable.

17. Drainage: The contractor shall maintain positive drainage throughout construction.

February 20, 2025

18. Pipe or Structure Abandonment: Any pipes or structures to be abandon must follow VODT PP-1 standard.

Figure 1

February 20, 2025

Figure 2

Harding Avenue Drainage, Sidewalk, and Roadway Improvements January 31, 2025

MAINTENANCE OF TRAFFIC 347100 - 1

SECTION 347100 – MAINTENANCE AND PROTECTION OF TRAFFIC

GENERAL

1.1 SUMMARY

A. Section Includes: Delegated design for maintenance and protection of traffic.

B. Related Requirements:

1. VDOT Work Zone Safety and Mobility – Transportation Management Plan (IIM-LD-

241.7 / IIM-TE-351.5) for a Type A, Category I project.

2. Virginia Supplement to the Manual on Uniform Traffic Control Devices (MUTCD), latest edition.

3. Federal Highway Administration Manual on Uniform Traffic Control Devices (MUTCD), latest edition.

4. Virginia Work Area Protection Manual, latest edition.

5. VDOT Road and Bridge Standards, latest edition.

6. VDOT Road and Bridge Specifications, latest edition.

1.2 LOCAL COORDINATION AND REQUIREMENTS

A. Speed Limit: A speed limit of 25 MPH must be maintained throughout construction along Harding Avenue.

B. Minimum Lane Width: A 10-foot lane width in each direction must be maintained at all times.

C. Lane or Road Closures: Any required lane and/or road closures must be approved by the Town Engineer a minimum of 48 hours prior to the closure. A detour plan must be submitted to the Town for approval a minimum of five (5) business days prior to the proposed closure. Any proposed detour shall not be authorized for a period longer than 48 hours and will only be allowed on an as needed basis and as approved by the Town Manager.

D. Miscellaneous Requirements

1. Two-way traffic must be maintained, unless previously approved by the Town. Refer to

1.2.C

2. Show location of temporary bus stops, as needed, and provide the required temporary signage.

3. At no time shall construction take place on both the right and left sides of vehicles unless prior approval is received from the town engineer.

4. Existing pedestrian connectivity shall be maintained at all times during the construction of the project. Should access to existing sidewalks/ ramps be impacted by a work zone, the contractor shall use the “sidewalk closure detail” from the Virginia Work Area Protection Manual. Temporary facilities shall meet or exceed the accessibility features present in the existing facility.

5. The contractor shall maintain access to all private driveways at all times and is responsible for coordination with the affected property owners.

Harding Avenue Drainage, Sidewalk, and Roadway Improvements January 31, 2025

MAINTENANCE OF TRAFFIC 347100 - 2

E. Contact Information

1. Blacksburg Engineering Department, 540-443-1300

2. Blacksburg Police Department, 540-443-1400

3. Blacksburg Volunteer Fire Department, 540-443-1475

4. Blacksburg Volunteer Rescue Squad, 540-443-1630

5. Montogomery County Public Schools 540-382-5100

6. New River Valley Emergency Communications Regional Authority, 540-382-4343

F. Any traffic incident that occurs during the life of this project will be reviewed by the contractor and the Town Engineer to determine whether any changes need to be made to the traffic control of the project.

1.3 PREINSTALLATION MEETINGS

A. The contractor shall meet with the Town of Blacksburg at least two weeks prior to commencing the Work of this Section.

1.4 DELEGATED DESIGN SUBMITTALS

A. The contractor shall submit maintenance and protection of traffic plans for authorized portions the project to the town for review and approval a minimum of 30 calendar days prior to commencing work. The maintenance and protection of traffic plans shall comply with the documents noted in section 1.1. B of this specification, town, and VDOT requirements.

B. The maintenance of traffic plans must be scalable, clear and legible.

C. The contractor is responsible for the design, placement, and maintenance of all temporary pavement markings, traffic control devices, signage, equipment, and personnel, including certified traffic control personnel to control two-way traffic during construction.

D. Qualifications Statement:

1. Submit qualifications for the preparer of the maintenance of traffic plans.

PART 2 - PRODUCTS – NOT USED

PART 3 - EXECUTION – NOT USED

END OF SECTION 347100

F. Any traffic incident that occurs during the life of this project will be reviewed by the contractor and the Town Engineer to determine whether any changes need to be made to the traffic control of the project.