I - 20/59
I - 20/59 in .1 MI. No. Al 79, Jefferson County, Alabama received a condition grade of F (0/100). Built in 1973, the bridge carries 140K vehicles daily on I - 20/59 over Stream. It is classified as structurally deficient.
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 is a 53-year-old bridge located .1 MI. No. Al 79 in Jefferson County, Alabama. The bridge carries I - 20/59 over Stream with 10 traffic lanes, handling approximately 140K vehicles per day. Built in 1973, the structure spans 11 meters.
The bridge received a Condition Grade of F (0/100) based on Federal Highway Administration inspection data. Its deck is rated 0/9 (serious), superstructure 0/9 (serious), and substructure 0/9 (serious). The bridge is classified as structurally deficient, meaning at least one major component is rated 4 or below — this signals a need for repair or replacement but does not necessarily indicate an immediate safety hazard.
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I - 20/59 has a Condition Score of 0/100 (Grade F). Its deck is rated 0/9, superstructure 0/9, and substructure 0/9 on the NBI scale. The bridge is classified as structurally deficient.
I - 20/59 was built in 1973, making it 53 years old. The average bridge age in the United States is 48 years.
I - 20/59 carries approximately 140K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 11 meters long and located on I - 20/59 in .1 MI. No. Al 79, Jefferson County, Alabama.
Yes, I - 20/59 is classified as structurally deficient because at least one of its primary components (deck, superstructure, or substructure) is rated 4 or below on the 0-9 NBI scale. This does not necessarily mean it is unsafe, but it requires significant repair or replacement.
I - 20/59 is located .1 MI. No. Al 79 in Jefferson County, Alabama. The bridge carries I - 20/59 over Stream. Its coordinates are 33.548889, -86.777222. It is maintained by State Highway Agency.
I - 20/59 carries I - 20/59 over Stream. The bridge is 11 meters long and was built in 1973.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.