US 59
US 59 in Ih 610/US 59 Interchange, Harris County, Texas received a condition grade of B (74/100). Built in 2002, the bridge carries 184K vehicles daily on US 59 over Ih 610w Sbfr;Mr;Toll Con.
US 59 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 2002 and is 24 years old — relatively young against the U.S. bridge stock. Modern bridges built to current FHWA standards generally outperform older structures on condition ratings. US 59 carries an average daily traffic count of 183,561 vehicles, with 7 lane(s) crossing Ih 610w Sbfr;Mr;Toll Con. 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
US 59 is a 24-year-old bridge located Ih 610/US 59 Interchange in Harris County, Texas. The bridge carries US 59 over Ih 610w Sbfr;Mr;Toll Con with 7 traffic lanes, handling approximately 184K vehicles per day. Built in 2002, the structure spans 34.7 meters.
The bridge received a Condition Grade of B (74/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 6/9 (fair), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
US 59 has a Condition Score of 74/100 (Grade B). Its deck is rated 7/9, superstructure 6/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
US 59 was built in 2002, making it 24 years old. The average bridge age in the United States is 48 years.
US 59 carries approximately 184K vehicles per day (average daily traffic). The bridge has 7 traffic lanes. It is 34.7 meters long and located on US 59 in Ih 610/US 59 Interchange, Harris County, Texas.
No, US 59 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
US 59 is located Ih 610/US 59 Interchange in Harris County, Texas. The bridge carries US 59 over Ih 610w Sbfr;Mr;Toll Con. Its coordinates are 29.728464, -95.461458. It is maintained by State Highway Agency.
US 59 carries US 59 over Ih 610w Sbfr;Mr;Toll Con. The bridge is 34.7 meters long and was built in 2002.
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.