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Budget Year / Version:  
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Description

This project provides for the replacement of the existing Dennis Avenue Bridge M-0194 over a tributary to Sligo Creek. The existing bridge, built in 1961, is a single 30-foot span structure composed of pre-stressed concrete voided slab beams carrying a 24-foot roadway, two six-foot shoulders, and two 4'-8" sidewalks. The proposed replacement bridge will be a 80-foot overall span three-cell precast concrete arch culvert carrying a 22-foot roadway, two five-foot bicycle compatible shoulders, two two-foot striped buffers, a 13-foot shared-use path on the north side and a seven-foot sidewalk on the south side, for a total clear bridge width of 56 feet. The project includes approach roadway work at each end of the bridge as necessary to tie into the existing roadway and sidewalks. The bridge will be closed to traffic during construction. Accelerated bridge construction techniques will be utilized to minimize the disruption to the traveling public and local community.
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Phase

Final Design Stage

Status

Active
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Budget Snapshot
$7.85M Total
Expenditures/Funding
$7.22M 6 Year Total
Expenditures/Funding
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Location

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Capacity

The roadway Average Daily Traffic (ADT) is approximately 14,000 and the roadway capacity will not change as a result of this project.
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Estimated Schedule

The design of the project is expected to be completed in the spring of 2022. The land acquisition is projected in FY22. The construction is scheduled to begin in the spring of 2023 and be completed in the fall of 2023. The bridge will be closed to traffic during the school summer break of 2023.
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Cost Change

Cost increase due to updated construction costs reflecting final design and estimates of utility relocation costs that were not previously known.
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Justification

The proposed replacement work will mitigate the frequent flooding of five residential properties and local streets upstream of the bridge; mitigate occasional roadway flooding on Dennis Avenue that causes significant traffic delays; and eliminate annual maintenance repairs required for this deteriorating structure. The existing bridge is rapidly deteriorating and is nearing the end of its estimated service life.
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Other

The December 2018 Technical Update to the Master Plan of Highways and Transitways designates Dennis Avenue as Minor Arterial Road (MA-17) with a minimum right-of-way of 80 feet. The December 2018 Montgomery County Bicycle Master Plan recommends a sidepath (shared use path) on the north side. Streetlights, crosswalks, sidewalk ramps, bikeways, and other pertinent issues are being considered in the design of the project to ensure pedestrian safety. The funding shown as "Intergovernmental" is from WSSC for its 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

Federal Highway Administration - Federal Aid Bridge Replacement/Rehabilitation Program, Maryland State Highway Administration, Maryland Department of the Environment, Montgomery County Department of Environmental Protection, Montgomery County Department of Permitting Services, Montgomery County Public School, Montgomery County Police Department, Montgomery County Fire and Rescue Services, Montgomery County Ride On Bus, Maryland-National Capital Park and Planning Commission, Utilities, and Wheaton Regional Dam Flooding Mitigation (CIP Project #801710).
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Budget Snapshot
$7.85M Total
Expenditures/Funding
$7.22M 6 Year Total
Expenditures/Funding
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Project Details
Project NumberP501701
Date Last Modified01/14/22
Administering AgencyTransportation
CategoryTransportation
SubCategoryBridges
Planning AreaKensington-Wheaton
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Total Expenditures by Cost Element (000s)
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Total Funding by Source (000s)
EXPENDITURES (000s)
Cost ElementsTotalThru FY21Est FY22Total 6 YearsFY 23FY 24FY 25FY 26FY 27FY 28Beyond 6 Years
Planning, Design and Supervision143518934590151039100000
Land100010000000000
Site Improvements and Utilities290002901527500000
Construction60250060253980204500000
Other00000000000
Total Expenditures785018944572164505271100000
FUNDING (000s)
Funding SourceTotalThru FY21Est FY22Total 6 YearsFY 23FY 24FY 25FY 26FY 27FY 28Beyond 6 Years
Federal Aid47350047352917181800000
G.O. Bonds28351894452201130889300000
Intergovernmental28000280280000000
Total Funding Sources785018944572164505271100000
APPROPRIATION AND EXPENDITURE DATA ($000s)
Appropriation FY 23 Request2240
Year First AppropriationFY22
Appropriation FY 24 Request0
Last FY's Cost Estimate5610
Cumulative Appropriation5610
Expenditure / Encumbrances289
Unencumbered Balance5321