Arlington County will begin reconstruction of the Mount Vernon Avenue Bridge over Four Mile Run in mid-August, launching a $23.8 million project expected to last two years.
The bridge is in poor condition, with the west side sidewalk already closed due to structural deficiencies. The joint capital improvement project between Alexandria and Arlington County will split costs evenly between the two jurisdictions.
Construction will proceed in phases to maintain traffic flow. Arlington County plans to upgrade the roadway and bridge deck one side at a time while keeping the opposite side open for two-way traffic. One sidewalk will remain accessible throughout the project.
The work begins with a two-month pre-construction period starting next week. During this phase, bridge traffic will be restricted to outer lanes while crews work on the median. Minor preparations will also take place on the Alexandria side of Four Mile Run…