I40
I40 in I24-I40 Interchange - C7, Davidson County, Tennessee received a condition grade of C (48/100). Built in 1960, the bridge carries 154K vehicles daily on I40 over I24. 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
I40 is a 66-year-old bridge located I24-I40 Interchange - C7 in Davidson County, Tennessee. The bridge carries I40 over I24 with 2 traffic lanes, handling approximately 154K vehicles per day. Built in 1960, the structure spans 46.6 meters.
The bridge received a Condition Grade of C (48/100) based on Federal Highway Administration inspection data. Its deck is rated 4/9 (poor), superstructure 5/9 (fair), and substructure 6/9 (fair). 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
I40 has a Condition Score of 48/100 (Grade C). Its deck is rated 4/9, superstructure 5/9, and substructure 6/9 on the NBI scale. The bridge is classified as structurally deficient.
I40 was built in 1960, making it 66 years old. The average bridge age in the United States is 48 years.
I40 carries approximately 154K vehicles per day (average daily traffic). The bridge has 2 traffic lanes. It is 46.6 meters long and located on I40 in I24-I40 Interchange - C7, Davidson County, Tennessee.
Yes, I40 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.
I40 is located I24-I40 Interchange - C7 in Davidson County, Tennessee. The bridge carries I40 over I24. Its coordinates are 36.139831, -86.727906. It is maintained by State Highway Agency.
I40 carries I40 over I24. The bridge is 46.6 meters long and was built in 1960.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.