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Description

This project provides for the rehabilitation of the existing Brighton Dam Road Bridge No. M-0229 over Brighton Dam of Triadelphia Reservoir. This 602-foot long 15-span bridge, which is supported by Brighton Dam, is in need of repairs to the parapets, bridge deck joints, prestressed concrete beams, abutment backwalls, street lights, and approach roadways and sidewalks to enhance the safety of the traveling public and the integrity of the dam. The existing storm inlets on the approach roadways at both ends of the bridge will be improved as needed.
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Phase

Planning Stage

Status

Active
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Budget Snapshot
$2.25M Total
Expenditures/Funding
$1.8M 6 Year Total
Expenditures/Funding
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Location

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Capacity

Upon completion, the Average Daily Traffic (ADT) on the Brighton Dam Road Bridge will remain approximately 6,000 vehicles per day.
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Estimated Schedule

The design is expected to be completed in the summer of 2020. Construction is scheduled to start in August 2021 and be completed in November 2021.
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Justification

This bridge, reconstructed in 1999, requires repairs to the 1,002-foot long west parapets, 642-foot long east parapets, sixteen bridge deck joints, prestressed concrete beams, abutment backwalls, street lights, and approach roadways and sidewalks. The parapets have severe concrete spalling at many parapet joints. Prestressed concrete beams and abutment backwalls have spalling and cracking. The approach roadways and sidewalks have settlement at both ends of the bridge. The bridge deck joints have failed, allowing water and deicing chemicals to flow through the bridge deck which resulted in corrosion and deterioration to the mechanized equipment for the dam operations. Some street lights and pole supports are damaged. The improvement of storm inlets was requested by WSSC to minimize storm runoff entering into the bridge deck surface from the approach roadways. Brighton Dam Road is classified as an arterial road in the 2005 Olney Master Plan. The deterioration of the bridge was identified through the County's 2017 biennial inspection program. The bridge rehabilitation was requested by WSSC to protect the newly reconstructed dam operating equipment. Funding for this project will be shared equally between Montgomery County, Howard County and WSSC in accordance with the August 28, 1996 Agreement. A Memorandum of Understanding (MOU) between Montgomery County, Howard County and WSSC is required for this project. The funding shown as "Intergovernmental" is from Howard County and WSSC for their share of the project cost.
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Disclosures

A pedestrian impact analysis has been completed for this project.
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Coordination

Washington Suburban Sanitary Commission, Howard County, Maryland Department of the Environment, Maryland Department of Natural Resources, Maryland-National Capital Park and Planning Commission, Montgomery County Department of Permitting Services, and U.S. Army Corps of Engineers.
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Budget Snapshot
$2.25M Total
Expenditures/Funding
$1.8M 6 Year Total
Expenditures/Funding
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Project Details
Project NumberP501907
Date Last Modified01/04/20
Administering AgencyTransportation
CategoryTransportation
SubCategoryBridges
Planning AreaOlney and Vicinity
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Total Expenditures by Cost Element (000s)
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Total Funding by Source (000s)
EXPENDITURES (000s)
Cost ElementsTotalThru FY19Est FY20Total 6 YearsFY 21FY 22FY 23FY 24FY 25FY 26Beyond 6 Years
Planning, Design and Supervision890045044018625400000
Land00000000000
Site Improvements and Utilities00000000000
Construction13600013600136000000
Other00000000000
Total Expenditures225004501800186161400000
FUNDING (000s)
Funding SourceTotalThru FY19Est FY20Total 6 YearsFY 21FY 22FY 23FY 24FY 25FY 26Beyond 6 Years
G.O. Bonds75001506006253800000
Intergovernmental150003001200124107600000
Total Funding Sources225004501800186161400000
APPROPRIATION AND EXPENDITURE DATA ($000s)
Appropriation FY 21 Request0
Year First AppropriationFY19
Appropriation FY 22 Request0
Last FY's Cost Estimate2250
Cumulative Appropriation2250
Expenditure / Encumbrances0
Unencumbered Balance2250