IH 35
IH 35 in 0.86 MI S Of Fm 3406, Williamson County, Texas received a condition grade of F (0/100). Built in 1960, the bridge carries 138K vehicles daily on IH 35 over Onion Branch. It is classified as structurally deficient.
Component Ratings
The riding surface — evaluated for cracking, spalling, and wear
Beams, girders, and trusses that support the deck
Piers, abutments, and foundations below the deck
Bridge Details
About This Bridge
IH 35 is a 66-year-old bridge located 0.86 MI S Of Fm 3406 in Williamson County, Texas. The bridge carries IH 35 over Onion Branch with 12 traffic lanes, handling approximately 138K vehicles per day. Built in 1960 and reconstructed in 2006, the structure spans 32.6 meters.
The bridge received a Condition Grade of F (0/100) based on Federal Highway Administration inspection data. Its deck is rated 0/9 (serious), superstructure 0/9 (serious), and substructure 0/9 (serious). The bridge is classified as structurally deficient, meaning at least one major component is rated 4 or below — this signals a need for repair or replacement but does not necessarily indicate an immediate safety hazard.
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
IH 35 has a Condition Score of 0/100 (Grade F). Its deck is rated 0/9, superstructure 0/9, and substructure 0/9 on the NBI scale. The bridge is classified as structurally deficient.
IH 35 was built in 1960 and reconstructed in 2006, making it 66 years old. The average bridge age in the United States is 48 years.
IH 35 carries approximately 138K vehicles per day (average daily traffic). The bridge has 12 traffic lanes. It is 32.6 meters long and located on IH 35 in 0.86 MI S Of Fm 3406, Williamson County, Texas.
Yes, IH 35 is classified as structurally deficient because at least one of its primary components (deck, superstructure, or substructure) is rated 4 or below on the 0-9 NBI scale. This does not necessarily mean it is unsafe, but it requires significant repair or replacement.
IH 35 is located 0.86 MI S Of Fm 3406 in Williamson County, Texas. The bridge carries IH 35 over Onion Branch. Its coordinates are 30.523533, -97.689519. It is maintained by State Highway Agency.
IH 35 carries IH 35 over Onion Branch. The bridge is 32.6 meters long and was built in 1960, with reconstruction in 2006.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.