SH 21 West Madison County Widening – Construction

The SH 21/US 190 West Madison County project widens the existing highway from a two-lane, undivided roadway to a four-lane, divided roadway. The project begins at the Navasota River and runs approximately 20 miles to Martin Luther King Boulevard in the City of Madisonville.

This project is part of an overall SH 21/US 190 corridor study from SH 6 in Bryan to Madisonville. To date, corridor improvements have been completed from SH 6 in Bryan to just east of the Navasota River. An interim passing lane project was constructed through Madison County from west of North Zulch to west of Madisonville through Madison County.

Project facts

• Contractor: James Construction Group LLC
• Award Amount: $178,956,171. 50
• Project start: May 27, 2025
• Projected completion: Summer 2030

Updates/closure information

Construction is set to begin on May 27, 2025. Check back here for any updates and/or closure information.

Project background and proposed improvements

SH 21, within the western half of Madison County, is a portion of the US 190 transportation corridor. US 190 is part of the National Highway System and serves as a freight and military route. Proposed improvements include:

• Straightening sharp curves along the corridor.
• Expanding the roadway from a 2-lane undivided highway to a 4-lane divided highway separated by a grassy median.
• Adding 10-foot outside and four-foot inside shoulders for improved roadway safety.
• Providing R-CUT (Restricted Crossing U-turn) intersections at selected locations.
• Constructing a relief route South of the community of North Zulch.
• Existing US 190 in North Zulch will become a business route.
• Providing Restricted Crossing U-turn (R-CUT) intersections at selected locations.

The project will improve safety and mobility by accommodating increasing traffic flow with additional travel lanes and dividing the opposing lanes of traffic with a median.

Downloads

• Section
• Overview Map Schematics (May 2019):
  • Section 1 - SH 21 - Navasota River to East of FM 2865 (Shepherd Creek)
  • Section 2 - SH 21 - East of FM 2865 (Shepherd Creek) to FM 39/BNSF RR
  • Section 3 - SH 21 - FM 39/BNSF RR to East of BS SH 21 (Kickapoo Creek)
  • Section 4 - SH 21 - East of BS SH 21 (Kickapoo Creek) to East of Clark Road
  • Section 5 - SH 21 - West of Strawther Road to West of Nettles Lane
  • Section 6 - SH 21 - West of Nettles Lane to Wilbur Street in Madisonville