I - 20/59 EAST
I - 20/59 EAST in Route Interchange, Jefferson County, Alabama received a condition grade of B (60/100). Built in 1969, the bridge carries 136K vehicles daily on I - 20/59 EAST over I - 20/59 West.
I - 20/59 EAST carries a B on the BridgeSafety Condition Score with 60/100. 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 1969 and is now 57 years old, at or past the typical 50-year design life for bridges of its vintage. Maintenance and inspection cycles are correspondingly more involved than for newer structures. I - 20/59 EAST carries an average daily traffic count of 135,990 vehicles, with 5 lane(s) crossing I - 20/59 West. 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
I - 20/59 EAST is a 57-year-old bridge located Route Interchange in Jefferson County, Alabama. The bridge carries I - 20/59 EAST over I - 20/59 West with 5 traffic lanes, handling approximately 136K vehicles per day. Built in 1969 and reconstructed in 2003, the structure spans 118 meters.
The bridge received a Condition Grade of B (60/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 5/9 (fair), and substructure 6/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I - 20/59 EAST has a Condition Score of 60/100 (Grade B). Its deck is rated 6/9, superstructure 5/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
I - 20/59 EAST was built in 1969 and reconstructed in 2003, making it 57 years old. The average bridge age in the United States is 48 years.
I - 20/59 EAST carries approximately 136K vehicles per day (average daily traffic). The bridge has 5 traffic lanes. It is 118 meters long and located on I - 20/59 EAST in Route Interchange, Jefferson County, Alabama.
No, I - 20/59 EAST is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
I - 20/59 EAST is located Route Interchange in Jefferson County, Alabama. The bridge carries I - 20/59 EAST over I - 20/59 West. Its coordinates are 33.521761, -86.824561. It is maintained by State Highway Agency.
I - 20/59 EAST carries I - 20/59 EAST over I - 20/59 West. The bridge is 118 meters long and was built in 1969, with reconstruction in 2003.
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.