Milwaukee National Ave Rebuild to Snarl Traffic for 3 Years

A major reconstruction of 2.6 miles of West National Avenue between South 39th and South 1st streets kicks off in April 2026, promising three years of snarled traffic on this busy Milwaukee corridor.[1][3] The City of Milwaukee and Wisconsin Department of Transportation will rebuild the four-lane artery in three phases—starting with 39th to 27th Street this year—shrinking it to two lanes in spots, adding protected bike tracks, and enhancing pedestrian crossings.[1][3] Crews will work weekdays and Saturdays from 7 a.m. to 7 p.m., maintaining one lane per direction with detours via Greenfield Avenue, while keeping business and home access open but limiting on-street parking.[3][4]

The overhaul targets safety amid Milwaukee's Vision Zero push to eliminate traffic deaths, replacing pavement, storm sewers, sidewalks, and signals while upgrading bus stops for Milwaukee County Transit System Route 18.[1][2][3] Officials held a kickoff meeting March 18 at Mitchell Park Domes, where residents and business owners raised worries about disruptions, with one Department of Public Works manager calling it a "nightmare" during construction.[3][4] Transit riders can check RideMCTS.com for alerts on temporary stops.[3]

For Milwaukeeans who rely on National Avenue for daily commutes, shopping, or MCTS buses, expect major delays that could reshape routines across the south side.[4] Safer streets with bike lanes and better crossings promise long-term gains, but phased work aims to ease pain by keeping alternating traffic flowing.[1][3]

Phases continue in 2027 from 11th to 1st Street and 2028 from 27th to 11th, weather permitting, with updates at engage.milwaukee.gov/national.[1][3]