I-26
I-26 in In N Charleston, Charleston County, South Carolina received a condition grade of C (57/100). Built in 1964, the bridge carries 170K vehicles daily on I-26 over RR Ns Spur & Taylor ST.
I-26 carries a C on the BridgeSafety Condition Score with 57/100. Component ratings sit in the middle of the FHWA NBI distribution; rehabilitation programming is likely on the owning agency’s medium-term horizon.
The bridge was built in 1964 and is now 62 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-26 carries an average daily traffic count of 170,100 vehicles, with 10 lane(s) crossing RR Ns Spur & Taylor ST. 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-26 is a 62-year-old bridge located In N Charleston in Charleston County, South Carolina. The bridge carries I-26 over RR Ns Spur & Taylor ST with 10 traffic lanes, handling approximately 170K vehicles per day. Built in 1964 and reconstructed in 2012, the structure spans 69.5 meters.
The bridge received a Condition Grade of C (57/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (fair), 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-26 has a Condition Score of 57/100 (Grade C). Its deck is rated 5/9, superstructure 6/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-26 was built in 1964 and reconstructed in 2012, making it 62 years old. The average bridge age in the United States is 48 years.
I-26 carries approximately 170K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 69.5 meters long and located on I-26 in In N Charleston, Charleston County, South Carolina.
No, I-26 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-26 is located In N Charleston in Charleston County, South Carolina. The bridge carries I-26 over RR Ns Spur & Taylor ST. Its coordinates are 32.892625, -80.018725. It is maintained by State Highway Agency.
I-26 carries I-26 over RR Ns Spur & Taylor ST. The bridge is 69.5 meters long and was built in 1964, with reconstruction in 2012.
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.