IH 45
IH 45 in 2.00 MI NW Of Fm 518, Harris County, Texas received a condition grade of B (74/100). Built in 2010, the bridge carries 184K vehicles daily on IH 45 over Fm 528 Nasa Pkwy.
IH 45 carries a B on the BridgeSafety Condition Score with 74/100. Most component ratings are solid; one or two may show wear consistent with the structure’s age, but the bridge is not flagged as structurally deficient.
The bridge was built in 2010 and is 16 years old — relatively young against the U.S. bridge stock. Modern bridges built to current FHWA standards generally outperform older structures on condition ratings. IH 45 carries an average daily traffic count of 184,461 vehicles, with 14 lane(s) crossing Fm 528 Nasa Pkwy. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
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 16-year-old bridge located 2.00 MI NW Of Fm 518 in Harris County, Texas. The bridge carries IH 45 over Fm 528 Nasa Pkwy with 14 traffic lanes, handling approximately 184K vehicles per day. Built in 2010, the structure spans 102.4 meters.
The bridge received a Condition Grade of B (74/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 7/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
IH 45 has a Condition Score of 74/100 (Grade B). Its deck is rated 6/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
IH 45 was built in 2010, making it 16 years old. The average bridge age in the United States is 48 years.
IH 45 carries approximately 184K vehicles per day (average daily traffic). The bridge has 14 traffic lanes. It is 102.4 meters long and located on IH 45 in 2.00 MI NW Of Fm 518, Harris County, Texas.
No, IH 45 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
IH 45 is located 2.00 MI NW Of Fm 518 in Harris County, Texas. The bridge carries IH 45 over Fm 528 Nasa Pkwy. Its coordinates are 29.528633, -95.130700. It is maintained by State Highway Agency.
IH 45 carries IH 45 over Fm 528 Nasa Pkwy. The bridge is 102.4 meters long and was built in 2010.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.