I-75 NB
I-75 NB in 0.3 MI N Of Gibsonton DR, Hillsborough County, Florida received a condition grade of B (70/100). Built in 1981, the bridge carries 157K vehicles daily on I-75 NB over Alafia River.
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-75 NB is a 45-year-old bridge located 0.3 MI N Of Gibsonton DR in Hillsborough County, Florida. The bridge carries I-75 NB over Alafia River with 4 traffic lanes, handling approximately 157K vehicles per day. Built in 1981, the structure spans 474 meters.
The bridge received a Condition Grade of B (70/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (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-75 NB has a Condition Score of 70/100 (Grade B). Its deck is rated 5/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-75 NB was built in 1981, making it 45 years old. The average bridge age in the United States is 48 years.
I-75 NB carries approximately 157K vehicles per day (average daily traffic). The bridge has 4 traffic lanes. It is 474 meters long and located on I-75 NB in 0.3 MI N Of Gibsonton DR, Hillsborough County, Florida.
No, I-75 NB 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-75 NB is located 0.3 MI N Of Gibsonton DR in Hillsborough County, Florida. The bridge carries I-75 NB over Alafia River. Its coordinates are 27.857425, -82.346578. It is maintained by State Highway Agency.
I-75 NB carries I-75 NB over Alafia River. The bridge is 474 meters long and was built in 1981.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.