US231; US431; SR1
US231; US431; SR1 in 0.6 MI N JCT Us231 *Us431, Madison County, Alabama received a condition grade of B (78/100). Built in 1991, the bridge carries 127K vehicles daily on US231; US431; SR1 over Norfolk Southern.
US231; US431; SR1 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 1991, making it 35 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. US231; US431; SR1 carries an average daily traffic count of 127,353 vehicles, with 5 lane(s) crossing Norfolk Southern. 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
US231; US431; SR1 is a 35-year-old bridge located 0.6 MI N JCT Us231 *Us431 in Madison County, Alabama. The bridge carries US231; US431; SR1 over Norfolk Southern with 5 traffic lanes, handling approximately 127K vehicles per day. Built in 1991, the structure spans 131.1 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
US231; US431; SR1 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.
US231; US431; SR1 was built in 1991, making it 35 years old. The average bridge age in the United States is 48 years.
US231; US431; SR1 carries approximately 127K vehicles per day (average daily traffic). The bridge has 5 traffic lanes. It is 131.1 meters long and located on US231; US431; SR1 in 0.6 MI N JCT Us231 *Us431, Madison County, Alabama.
No, US231; US431; SR1 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
US231; US431; SR1 is located 0.6 MI N JCT Us231 *Us431 in Madison County, Alabama. The bridge carries US231; US431; SR1 over Norfolk Southern. Its coordinates are 34.730000, -86.596400. It is maintained by State Highway Agency.
US231; US431; SR1 carries US231; US431; SR1 over Norfolk Southern. The bridge is 131.1 meters long and was built in 1991.
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.