This project will construct additional lanes on US-231/US-431/North Memorial Parkway from south of the intersection of Mastin Lake Road to the intersection of Winchester Road in Huntsville, including a mainline overpass and access roads at Mastin Lake Road.
| Region/County | North/Madison |
| Type of Work | Additional Lanes/Bridge Construction |
| Route | US-231/US-431 |
| Projected Start | June 2023 |
| Projected Completion | Spring 2026 |
| Traffic Impact | Closure of shoulder and outside turn or acceleration lanes northbound and southbound, |
| Project Number | NH-001(610) |
| Project Cost | $33,978,345.00 |
