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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 prestressed 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 utility relocations and 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
$10.87M Total
Expenditures/Funding
$9.88M 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 vehicles per day.
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Estimated Schedule

The design of the project is expected to finish in the summer of 2024. Land acquisition will be complete in FY25. The construction is scheduled to start in the spring of 2025 and be completed in the fall of 2025. The bridge will be closed to traffic during the school summer break of 2025.
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Cost Change

Cost increase due to inflation, newly identified subsurface debris/trash landfill, additional utility coordination, and extra erosion and sediment control to fulfill new stormwater permitting requirements.
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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 Water for its share of the project cost.
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Fiscal Note

In FY23, this project received transfers totaling $438,000 from P502006 Davis Mill Road Emergency Stabilization ($7,000), P500717 Montrose Parkway East ($337,000), and P501200 Platt Ridge Drive Extended ($94,000).
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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 Schools, Montgomery County Department of Police, Montgomery County Fire and Rescue Service, 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
$10.87M Total
Expenditures/Funding
$9.88M 6 Year Total
Expenditures/Funding
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Project Details
Project NumberP501701
Date Last Modified01/08/24
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 FY23Est FY24Total 6 YearsFY 25FY 26FY 27FY 28FY 29FY 30Beyond 6 Years
Planning, Design and Supervision1900313126146191055100000
Land20002020000000
Site Improvements and Utilities6850550135135000000
Construction82650082654723354200000
Other00000000000
Total Expenditures1087031367698815788409300000
FUNDING (000s)
Funding SourceTotalThru FY23Est FY24Total 6 YearsFY 25FY 26FY 27FY 28FY 29FY 30Beyond 6 Years
Federal Aid65100065103472303800000
G.O. Bonds406031367630712016105500000
Intergovernmental30000300300000000
Total Funding Sources1087031367698815788409300000
APPROPRIATION AND EXPENDITURE DATA ($000s)
Appropriation FY 25 Request1500
Year First AppropriationFY22
Appropriation FY 26 Request0
Last FY's Cost Estimate9370
Cumulative Appropriation9370
Expenditure / Encumbrances335
Unencumbered Balance9035