To address rapid growth in eastern Travis and Williamson Counties and relieve congestion where the 290 Toll Road (Manor Expressway) meets SH 130, the Central Texas Regional Mobility Authority advanced a program to create free‑flowing direct connectors between the two major tollways. The interchange quickly became overburdened after opening, with high traffic demand causing backups at frontage-road intersections. As the prime design consultant, STV provided plans, specifications and estimates (PS&E) to enhance connectivity, reduce congestion and support long‑term mobility for the region’s expanding population.
What challenges did STV address?
The two tollways were originally designed with interim configurations that required significant geometric revisions to accommodate new direct connectors. STV needed to integrate three new direct connectors, both tolled and non‑tolled, along with a series of operational improvements that worked within existing and ultimate planned roadway layouts. The project also required careful coordination with CapMetro for a railroad overpass, as well as major utility and ITS fiber relocations to ensure uninterrupted toll collection.
What solutions did STV deliver?
STV optimized interchange geometrics to create a five‑level system interchange that includes more than 10,000 linear feet of bridge structure and 66,000 linear feet of retaining wall. The team developed ITS improvements, toll gantries, high‑mast lighting and extensive utility coordination, including 2.4 miles of temporary fiber lines to maintain toll system operations. Working under an expedited schedule, STV revised previous schematic designs to deliver a standalone PS&E package compatible with both existing and ultimate corridor conditions.
How does this project benefit the community?
The new direct connectors relieve congestion, improve travel reliability and create safer, continuous routes between two of Central Texas’ busiest toll facilities. The interchange enhances regional mobility, supports economic growth and strengthens long‑term transportation capacity for fast‑growing communities east of Austin.
Key stats and accolades
- Three new direct connectors
- Five‑level system interchange
- 10,000 linear feet of bridge structure
- 66,000 linear feet of retaining wall
- ITS upgrades, toll gantries and 2.4 miles of temporary fiber
