I-20
I-20 in 4 MI N Of Columbia, Richland County, South Carolina received a condition grade of B (64/100). Built in 1964, the bridge carries 124K vehicles daily on I-20 over Crane Creek & S-43.
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 is a 62-year-old bridge located 4 MI N Of Columbia in Richland County, South Carolina. The bridge carries I-20 over Crane Creek & S-43 with 6 traffic lanes, handling approximately 124K vehicles per day. Built in 1964 and reconstructed in 1991, the structure spans 91.4 meters.
The bridge received a Condition Grade of B (64/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 6/9 (fair), and substructure 6/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I-20 has a Condition Score of 64/100 (Grade B). Its deck is rated 7/9, superstructure 6/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-20 was built in 1964 and reconstructed in 1991, making it 62 years old. The average bridge age in the United States is 48 years.
I-20 carries approximately 124K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 91.4 meters long and located on I-20 in 4 MI N Of Columbia, Richland County, South Carolina.
No, I-20 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 is located 4 MI N Of Columbia in Richland County, South Carolina. The bridge carries I-20 over Crane Creek & S-43. Its coordinates are 34.053611, -81.060000. It is maintained by State Highway Agency.
I-20 carries I-20 over Crane Creek & S-43. The bridge is 91.4 meters long and was built in 1964, with reconstruction 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.