01_Scope of Work.pdf

ELEVEN MILE CANYON ROAD 96 BRIDGES AND GUARDRAIL REHABILITATION

ATTACHMENT 01: SCOPE OF WORK

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Project Location:

The bridges are located within Eleven Mile Canyon on the Pike National Forest, South Park Ranger District in Park County approximately 1 mile southwest of Lake George, Colorado at Mile Posts 3.2, 4.5, 6.2, 6.8 and 8.7 on Forest Road (FR) 96.

To access the project site from Lake George travel south 0.9 miles on County Rd 96. Veer right at the Y-intersection to remain on FR 96 and enter Eleven Mile Canyon. Proceed Southwest on FR 96 (past the Eleven Mile Canyon entrance fee station) 3.2, 4.5, 6.2, 6.8 or

8.7 miles respectively.

Scope of Work:

This project consists of five road bridges that are to be rehabilitated and have approach guardrails installed. The table below lists bridge mile posts and descriptions as well as roadway features that may affect project access and an excavation disposal area location.

Mile Post on

FR 96

Feature Bridge

Number Access Notes

3.2 Steel Girder Bridge 96.3.2

4.5 Steel Girder Bridge 96.4.5

5.4 Tunnel #1 14’-8” vertical clearance, 15’-6” horizonal clearance

6.1 Intersection with Wagon

Tongue Road (FR 393)

Emergency egress out of the canyon

6.2 Steel Girder Bridge 96.6.2

6.8 Steel Pony Truss Bridge 96.6.8 Posted Weight Limits:

21 Ton – 2 axle 27 Tons – 3 axle 35 Tons – 4 axle

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7.8 Tunnel #2 16’-1” vertical clearance, 15’-10” horizonal clearance

7.9 Tunnel #3 16’-8” vertical clearance, 14’-9” horizonal clearance

8.7 Steel Girder Bridge 96.8.7

9.6 Parking Area at dam gate Excess material disposal

area

Work shall consist of the following. See Schedule of Items for Base Bid Vs. Optional Item breakout).

Construction survey and staking (all bridges) Establishing temporary traffic control (all bridges) Erosion control (all bridges) Clearing & grubbing (all bridges) Remove and dispose of existing approach guardrail (all bridges) Remove excess shoulder material and dispose at mile post 9.6 parking area (all bridges) Construct embankment for new approach guardrail (all bridges) Install new approach guardrail with transitions and terminal sections (all bridges) Contractor testing as specified - including but not limited to structural backfill optimum moisture content & max dry density, in-place density & moisture content (all bridges) Replace existing bridge bearing pads (bridges 96.3.2, 96.4.5, 96.6.2, & 96.8.7) Reinforce existing bridge rail posts with additional steel (bridges 96.3.2, 96.4.5, 96.6.2, & 96.8.7) Remove rust, clean, and paint existing bridge rail (bridges 96.3.2, 96.4.5, 96.6.2, & 96.8.7) including lead paint mitigation requirements as existing bridge rail has lead paint.

Install new bridge rail (bridge 96.6.8) Repair existing concrete wall (bridge 96.6.8)

The governing specifications for this Contract are:

• Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects (FP – 14). These specifications can be viewed at no cost on the FHWA website, which also gives ordering information:

https://flh.fhwa.dot.gov/resources/specs/

• USFS Supplemental Specifications. These specifications are included in this contract.

• Manual on Uniform Traffic Control Devices (MUTCD), 2009 Edition with Revisions

1 and 2, May 2012. These specifications can be viewed at no cost on the MUTCD website: http://mutcd.fhwa.dot.gov/kno_2009r1r2.htm

Traffic Control, Work Restrictions, and Schedule:

• No weekend work shall be allowed.

• Maintain one lane of travel across bridge and through construction zone at all times except when jacking bridge superstructure and replacing bearing pads.

https://flh.fhwa.dot.gov/resources/specs/ http://mutcd.fhwa.dot.gov/kno_2009r1r2.htm

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• The road may be temporarily closed from 0800 – 1700, Monday through Thursday, to allow for bridge jacking and bearing pad replacement. No Friday road closures shall be allowed. Minimize road closures to the extent practicable to allow ingress and egress through the canyon.

• In the event of an emergency, access through the temporary closure must be restored as soon as possible to allow emergency vehicle ingress and egress.

• If the contractor will be camping near the site on National Forest Service lands, a permit must first be obtained. The permit request shall be made through the South Park Ranger District (719) 836-2031 and shall be directed to the District Ranger.

• Contractor shall provide Contracting Officer a schedule indicating anticipated road closure dates for bearing pad replacement no less than 28 days prior to start of work.

Hazardous Materials:

Lead-based paint testing performed in 2021 found that the approach guardrail as well as the bridge railings on bridges 96.3.2, 96.4.5, 96.6.2, & 96.8.7 all contain lead-based paint above or equal to 1.0 mg/cm².

Staging/Storage Areas:

Staging and storage of materials shall be allowed at the intersection of FR 393 (Wagon Tongue Rd) and FR 96 (Eleven Mile Canyon Rd), which is located immediately adjacent to the project site. Staging and storage shall also be allowed within the parking area located at Mile Post 9.6 on FR 96. Limits of staging areas shall be marked on the ground by the Forest Service prior to beginning work. Perimeters of staging areas shall be protected with orange construction fencing (or approved alternate method). Perimeter protection shall be the responsibly of the contractor and shall be maintained for the duration of the work.

Excess Material Disposal Area:

Excess material generated from the project site may be placed at the parking area located at Mile Post 9.6 on FR 96. Limits of material disposal shall be marked on the ground by the CO prior to placement and material shall be smoothed and graded to drain prior to acceptance of work.

Seeding:

The contractor shall roughen and scarify areas to receive topsoil. The contractor to seed all disturbed areas with government furnished seed in areas approved by the Forest Service. The installation of seed shall be incidental to Item 204(20). The contractor shall notify the Contracting Officer 7 days prior to installing the erosion control mats. Erosion control mats installed on areas to still receive seed shall be removed and reinstalled or replaced by the contractor at no expense to the government.

Government Furnished Materials:

Weed-free seed mix

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Bridge 96.3.2

Facing Northeast

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Facing Southwest

Bridge 96.4.5

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Bridge 96.6.2

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Bridge 96.6.8

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Overview

Underview

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Bridge 96.8.7