I55 NB
I55 NB in I-240 Over I-55 JCT., Shelby County, Tennessee received a condition grade of B (61/100). Built in 1958, the bridge carries 132K vehicles daily on I55 NB over I-55 N.B. / I-240.
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
I55 NB is a 68-year-old bridge located I-240 Over I-55 JCT. in Shelby County, Tennessee. The bridge carries I55 NB over I-55 N.B. / I-240 with 4 traffic lanes, handling approximately 132K vehicles per day. Built in 1958 and reconstructed in 1998, the structure spans 70.7 meters.
The bridge received a Condition Grade of B (61/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 6/9 (fair), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I55 NB has a Condition Score of 61/100 (Grade B). Its deck is rated 6/9, superstructure 6/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
I55 NB was built in 1958 and reconstructed in 1998, making it 68 years old. The average bridge age in the United States is 48 years.
I55 NB carries approximately 132K vehicles per day (average daily traffic). The bridge has 4 traffic lanes. It is 70.7 meters long and located on I55 NB in I-240 Over I-55 JCT., Shelby County, Tennessee.
No, I55 NB is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
I55 NB is located I-240 Over I-55 JCT. in Shelby County, Tennessee. The bridge carries I55 NB over I-55 N.B. / I-240. Its coordinates are 35.071336, -90.025611. It is maintained by State Highway Agency.
I55 NB carries I55 NB over I-55 N.B. / I-240. The bridge is 70.7 meters long and was built in 1958, with reconstruction in 1998.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.