Dennis Avenue Bridge (M-0194)

This project provides for the replacement of the existing Dennis Avenue Bridge M-0194 over Wheaton Branch, a tributary to Sligo Creek. The existing bridge, built in 1961, is a single 30-foot span structure composed of pre-stressed concrete voided slabs, carrying a 36-foot clear roadway width with two 12-foot lanes and two 6-foot shoulders, plus a 4'-8" sidewalk on both sides.  The proposed bridge will be a three-cell precast arch culvert with an 80-foot overall length, carrying a 36-foot clear roadway width with two 11-foot lanes, two 2-foot striped buffers and two 5-foot bicycle compatible shoulders; plus a 13-foot shared use path on the north side and a 7-foot sidewalk on the south side. The scope also includes the installation of steam stabilization measures and approach roadway work as necessary at each end of the bridge to tie-in to the existing roadway.  The bridge and road will be closed to traffic within school summer break during the construction while maintaining vehicular traffic with a detour. The pedestrian/bicycle traffic will be detoured through a temporary 8’ shared use path via an 8’ wide temporary pedestrian bridge crossing Wheaton Branch located north of the Dennis Avenue Bridge. Accelerated bridge construction techniques will be utilized to minimize the disruption to the traveling public and local community.

Project Schedule

  • Design: October 2018 - June 2021
  • Construction: Spring 2022 – Summer 2022

Come to our Virtual Meeting

Montgomery County invites you to attend an online public informational meeting to learn more about the replacement of Dennis Avenue Bridge No. M-0194 over Wheaton Branch by the Department of Transportation (DOT) and the flood mitigation for Wheaton Branch by the Department of Environmental Protection (DEP). This meeting will not take place in person due to the COVID-19 outbreak, but you can join us through your computer or by telephone.

A virtual meeting will be held on Wednesday, December 16, 2020 at 6:30 p.m.  The purpose of the meeting is to present the project scope, preliminary design for the replacement bridge, flood mitigation, maintenance of traffic during construction, estimated project costs and schedules, and to obtain community input and answer any questions you might have about the projects.   We request that you register beforehand. Please use the  online registration form (click here) to register for the meeting . Shortly after you submit your registration, you will receive an email providing the link and instructions for signing into the meeting and using the internet-based virtual platform.

We look forward to your participation. If you require special accommodations to participate in the meeting or to view materials, please contact the DOT’s Project Manager, Greg Hwang, by email at .

Public Feedback

The County welcomes your feedback. Public input is the key to the success of a public infrastructure project, as it allows the County to understand the concerns of the community. Your input is important! Please provide us with your valuable comments by Friday, January 15, 2021, via the following:

Project Managers

Replacement of Dennis Avenue Bridge No. M-0194 over Wheaton Branch
Greg Hwang / 240-777-7279 /
100 Edison Park Drive, 4th Floor, Gaithersburg, MD 20878

Wheaton Branch Flood Mitigation
Gene Gopenko / 240-777-7723 /
MCDEP Division of Watershed Restoration
255 Rockville Pike, Suite 120, Rockville, MD 20850
Project Webpage: on the  “Wheaton Branch Flood Mitigation Project” tab.

Area Map