I-77
I-77 in 6.9 MI N Of Rock Hill, York County, South Carolina received a condition grade of B (65/100). Built in 1973, the bridge carries 126K vehicles daily on I-77 over S-46-100.
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-77 is a 53-year-old bridge located 6.9 MI N Of Rock Hill in York County, South Carolina. The bridge carries I-77 over S-46-100 with 8 traffic lanes, handling approximately 126K vehicles per day. Built in 1973 and reconstructed in 2000, the structure spans 45.7 meters.
The bridge received a Condition Grade of B (65/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (fair), superstructure 7/9 (good), and substructure 6/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I-77 has a Condition Score of 65/100 (Grade B). Its deck is rated 5/9, superstructure 7/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-77 was built in 1973 and reconstructed in 2000, making it 53 years old. The average bridge age in the United States is 48 years.
I-77 carries approximately 126K vehicles per day (average daily traffic). The bridge has 8 traffic lanes. It is 45.7 meters long and located on I-77 in 6.9 MI N Of Rock Hill, York County, South Carolina.
No, I-77 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-77 is located 6.9 MI N Of Rock Hill in York County, South Carolina. The bridge carries I-77 over S-46-100. Its coordinates are 35.009444, -80.970556. It is maintained by State Highway Agency.
I-77 carries I-77 over S-46-100. The bridge is 45.7 meters long and was built in 1973, with reconstruction in 2000.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.