I-275 (SR-93)
I-275 (SR-93) in 1.0mi. North Of SR-574, Hillsborough County, Florida received a condition grade of B (69/100). Built in 1966, the bridge carries 185K vehicles daily on I-275 (SR-93) over US-92 (Hillsborough AVE).
I-275 (SR-93) carries a B on the BridgeSafety Condition Score with 69/100. 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 1966 and is now 60 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 (SR-93) carries an average daily traffic count of 185,000 vehicles, with 7 lane(s) crossing US-92 (Hillsborough AVE). 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 (SR-93) is a 60-year-old bridge located 1.0mi. North Of SR-574 in Hillsborough County, Florida. The bridge carries I-275 (SR-93) over US-92 (Hillsborough AVE) with 7 traffic lanes, handling approximately 185K vehicles per day. Built in 1966 and reconstructed in 2024, the structure spans 62.2 meters.
The bridge received a Condition Grade of B (69/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 7/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I-275 (SR-93) has a Condition Score of 69/100 (Grade B). Its deck is rated 6/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-275 (SR-93) was built in 1966 and reconstructed in 2024, making it 60 years old. The average bridge age in the United States is 48 years.
I-275 (SR-93) carries approximately 185K vehicles per day (average daily traffic). The bridge has 7 traffic lanes. It is 62.2 meters long and located on I-275 (SR-93) in 1.0mi. North Of SR-574, Hillsborough County, Florida.
No, I-275 (SR-93) 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 (SR-93) is located 1.0mi. North Of SR-574 in Hillsborough County, Florida. The bridge carries I-275 (SR-93) over US-92 (Hillsborough AVE). Its coordinates are 27.996125, -82.453728. It is maintained by State Highway Agency.
I-275 (SR-93) carries I-275 (SR-93) over US-92 (Hillsborough AVE). The bridge is 62.2 meters long and was built in 1966, with reconstruction in 2024.
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.