Primary Limestone County Driving Topic: U.S. 84 Through Mexia and the Transition From City to Rural Highway
The strongest local driving topic in Limestone County is U.S. 84 through Mexia.
Mexia sits at the intersection of U.S. 84, SH 14, and SH 171.
TxDOT has programmed a major U.S. 84 widening project through Mexia.
The project would widen approximately 1.05 miles to four lanes with a two-way left-turn lane, construct continuous sidewalks and a shared-use path, improve drainage, and reconstruct driveways.
TxDOT’s Rural Transportation Improvement Program identifies the project as fully funded with a then-estimated FY 2027 letting date.
For a student, this corridor teaches several important skills.
Watch Commercial Driveways
U.S. 84 through Mexia includes business entrances and turning traffic.
Students should scan beyond the vehicle immediately ahead and watch for brake lights several vehicles forward.
Use the Center Turn Lane Correctly
Where a two-way left-turn lane exists, the student should use it only for lawful turning movements.
Do not use a center turn lane as a travel or passing lane.
Expect Changing Construction Patterns
Road widening can produce:
Temporary lanes
Changed driveway access
Construction vehicles
Temporary signals
Lane closures
Uneven pavement
New pavement markings
Students should follow current signs rather than relying on an earlier practice route.
Prepare for the Rural Transition
Traffic density drops outside developed Mexia.
Students need to adjust scanning distance and following distance as speeds increase.

