IH 45
IH 45 in 0.30 MI N Of Sh 105, Montgomery County, Texas received a condition grade of F (0/100). Built in 1962, the bridge carries 126K vehicles daily on IH 45 over Trib Of Alligator CR. 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 45 is a 64-year-old bridge located 0.30 MI N Of Sh 105 in Montgomery County, Texas. The bridge carries IH 45 over Trib Of Alligator CR with 15 traffic lanes, handling approximately 126K vehicles per day. Built in 1962 and reconstructed in 2012, the structure spans 8.5 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 45 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 45 was built in 1962 and reconstructed in 2012, making it 64 years old. The average bridge age in the United States is 48 years.
IH 45 carries approximately 126K vehicles per day (average daily traffic). The bridge has 15 traffic lanes. It is 8.5 meters long and located on IH 45 in 0.30 MI N Of Sh 105, Montgomery County, Texas.
Yes, IH 45 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 45 is located 0.30 MI N Of Sh 105 in Montgomery County, Texas. The bridge carries IH 45 over Trib Of Alligator CR. Its coordinates are 30.319447, -95.473058. It is maintained by State Highway Agency.
IH 45 carries IH 45 over Trib Of Alligator CR. The bridge is 8.5 meters long and was built in 1962, with reconstruction in 2012.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.