The Main Street Bridge Over I-35E Is Getting Rebuilt — Lane Disruptions Run Through Late 2026

If you drive south on I-35E through Lewisville with any regularity, you already know this stretch. Orange barrels at Main Street, lanes that shift without warning, a bridge that looks nothing like it did a couple of years ago. That's a deliberate rebuild, and it's still going.

TxDOT's $105 million project reconstructs the FM 1171/Main Street bridge over I-35E, rebuilds 1.3 miles of the main interstate lanes, and adds a new northbound frontage road from Fox Avenue to College Street. Work started in 2023. Completion is estimated for late 2026 or January 2027.

That window is wide, and it matters. The bridge itself isn't the only moving piece. Crews have been building new retaining walls on the north side of the bridge, drilling shafts for pillars supporting the widened structure, and continuing paving and drainage work on the frontage roads. Each phase brings its own round of closures. Both northbound and southbound lanes near Main Street have faced nightly closures.

When full closures happen, TxDOT posts the current detour routes along with closure schedules at txdot.gov — worth a bookmark before a late night out or an early DFW departure.

The bottom line: lane disruptions on this stretch aren't a one-week nuisance. They're a several-months reality. The project is funded through the Denton County Connections and Texas Clear Lanes programs. TxDOT posts closure schedules at txdot.gov — worth a bookmark if I-35E through Lewisville is part of your regular route.