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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 24-foot roadway, two six-foot shoulders, 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

Preliminary Design Stage

Status

Active
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Budget Snapshot
$5.61M Total
Expenditures/Funding
$5.51M 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 finish in the spring of 2022. The land acquisition is projected in FY22. The construction is scheduled to start 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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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 May 1989 Kensington-Wheaton Master Plan designates Dennis Avenue as Arterial Road (A-59) 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.
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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
$5.61M Total
Expenditures/Funding
$5.51M 6 Year Total
Expenditures/Funding
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Project Details
Project NumberP501701
Date Last Modified05/20/21
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 FY20Rem FY20Total 6 YearsFY 21FY 22FY 23FY 24FY 25FY 26Beyond 6 Years
Planning, Design and Supervision865103076215498154356000
Land10000100010000000
Site Improvements and Utilities550005500015535000
Construction40950040950013052790000
Other00000000000
Total Expenditures56101030550715419814743681000
FUNDING (000s)
Funding SourceTotalThru FY20Rem FY20Total 6 YearsFY 21FY 22FY 23FY 24FY 25FY 26Beyond 6 Years
Federal Aid35640035640011242440000
G.O. Bonds2046103019431541983501241000
Total Funding Sources56101030550715419814743681000
APPROPRIATION AND EXPENDITURE DATA ($000s)
Appropriation FY 21 Request255
Year First Appropriation
Appropriation FY 22 Request5155
Last FY's Cost Estimate5610
Cumulative Appropriation455
Expenditure / Encumbrances163
Unencumbered Balance292