IH 45 NB
IH 45 NB in 1.8 MI N Of Bwy 8, Harris County, Texas received a condition grade of B (78/100). Built in 1997, the bridge carries 125K vehicles daily on IH 45 NB over Rankin RD.
IH 45 NB carries a B on the BridgeSafety Condition Score with 78/100. 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 1997, making it 29 years old — past the early-life period but still well within typical service life. Routine inspections and modest repair work are normal for bridges in this age band. IH 45 NB carries an average daily traffic count of 125,128 vehicles, with 6 lane(s) crossing Rankin RD. 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 NB is a 29-year-old bridge located 1.8 MI N Of Bwy 8 in Harris County, Texas. The bridge carries IH 45 NB over Rankin RD with 6 traffic lanes, handling approximately 125K vehicles per day. Built in 1997, the structure spans 125 meters.
The bridge received a Condition Grade of B (78/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), 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 NB has a Condition Score of 78/100 (Grade B). Its deck is rated 7/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
IH 45 NB was built in 1997, making it 29 years old. The average bridge age in the United States is 48 years.
IH 45 NB carries approximately 125K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 125 meters long and located on IH 45 NB in 1.8 MI N Of Bwy 8, Harris County, Texas.
No, IH 45 NB 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 NB is located 1.8 MI N Of Bwy 8 in Harris County, Texas. The bridge carries IH 45 NB over Rankin RD. Its coordinates are 29.965608, -95.418872. It is maintained by State Highway Agency.
IH 45 NB carries IH 45 NB over Rankin RD. The bridge is 125 meters long and was built in 1997.
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.