I-275 NB & SB
I-275 NB & SB in 0.9 MI. N Of Hills. River, Hillsborough County, Florida received a condition grade of B (77/100). Built in 1967, the bridge carries 152K vehicles daily on I-275 NB & SB over SR-580 And Csx RR.
I-275 NB & SB carries a B on the BridgeSafety Condition Score with 77/100. Most component ratings are solid; one or two may show wear consistent with the structure’s age, but the bridge is not flagged as structurally deficient.
The bridge was built in 1967 and is now 59 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-275 NB & SB carries an average daily traffic count of 151,500 vehicles, with 8 lane(s) crossing SR-580 And Csx RR. 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-275 NB & SB is a 59-year-old bridge located 0.9 MI. N Of Hills. River in Hillsborough County, Florida. The bridge carries I-275 NB & SB over SR-580 And Csx RR with 8 traffic lanes, handling approximately 152K vehicles per day. Built in 1967 and reconstructed in 2001, the structure spans 83.2 meters.
The bridge received a Condition Grade of B (77/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 7/9 (good), and substructure 8/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I-275 NB & SB has a Condition Score of 77/100 (Grade B). Its deck is rated 7/9, superstructure 7/9, and substructure 8/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-275 NB & SB was built in 1967 and reconstructed in 2001, making it 59 years old. The average bridge age in the United States is 48 years.
I-275 NB & SB carries approximately 152K vehicles per day (average daily traffic). The bridge has 8 traffic lanes. It is 83.2 meters long and located on I-275 NB & SB in 0.9 MI. N Of Hills. River, Hillsborough County, Florida.
No, I-275 NB & SB 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-275 NB & SB is located 0.9 MI. N Of Hills. River in Hillsborough County, Florida. The bridge carries I-275 NB & SB over SR-580 And Csx RR. Its coordinates are 28.032867, -82.454911. It is maintained by State Highway Agency.
I-275 NB & SB carries I-275 NB & SB over SR-580 And Csx RR. The bridge is 83.2 meters long and was built in 1967, with reconstruction in 2001.
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.