Aesthetics

The project includes several unique design features, including "signatures" with local ties.

Concrete Median Barrier

A continuous barrier needs to be provided between the northbound and southbound main lanes of I-35. This will help prevent accidents where a vehicle crosses the median into oncoming traffic.

Continuous Frontage Roads

There are several locations now where the frontage roads are discontinuous. Continuous frontage roads reduce the number of vehicles on the main lanes of I-35 and allow traffic to be redirected when needed.

Horizontal Alignments

• Curves -  Curves to the left or right must not be too sharp to safely drive at a safe speed. Curves that are too sharp increase the likelihood that a car will drive off the road or into oncoming traffic.
• Clear Zones - Areas beside all roadways, including frontage roads, must be free of obstructions. These "clear zones" vary in width based on speeds and whether the road has curbs.

Illumination

Improved night time roadway and interchange illumination will be added throughout the corridor.

Intelligent Transportation Systems (ITS)

I-35 will include several ITS features, including changeable message signs, highway advisory radio and roadway cameras.

One-Way Frontage Roads

In order to assure statewide consistency in driver expectations, two-way frontage roads need to be changed to one-way in order to increase roadway safety. One-way frontage roads need to be provided throughout the 94 miles of I-35 in the Waco District.

Ramps

Throughout the 94-mile I-35 corridor, the entrance and exit ramps need to be converted to an "X" pattern where possible. X pattern ramps provide several advantages over "diamond" or "Y" pattern ramps, including the safer entering and exiting of the highway.

Truck Lane Restrictions

Trucks with three or more axles would be prohibited from using the left lane.

Vertical Alignments

• Crest Curves - Vertical curves, at hills and valleys, must allow drivers to see ahead and avoid objects in the roadway.
• Sag Curves - Likewise, in valleys, or "sags," drivers must be able to adequately see the end of their headlight beams on the road to avoid obstructions.
• Clearance - A vertical clearance of 16' 6" above the roadway must be provided for trucks to pass under structures.
• Clear Zones - Areas beside all roadways, including frontage roads, must be free of obstructions. These "clear zones" vary in width based on speeds and whether the road has curbs.