I-4 (SR-400)
I-4 (SR-400) in 0.5 MI E/O Polk Pkwy, Polk County, Florida received a condition grade of F (0/100). Built in 1999, the bridge carries 127K vehicles daily on I-4 (SR-400) over Winston Drain. It is classified as structurally deficient.
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-4 (SR-400) is a 27-year-old bridge located 0.5 MI E/O Polk Pkwy in Polk County, Florida. The bridge carries I-4 (SR-400) over Winston Drain with 11 traffic lanes, handling approximately 127K vehicles per day. Built in 1999, the structure spans 6.7 meters.
The bridge received a Condition Grade of F (0/100) based on Federal Highway Administration inspection data. Its deck is rated 0/9 (serious), superstructure 0/9 (serious), and substructure 0/9 (serious). The bridge is classified as structurally deficient, meaning at least one major component is rated 4 or below — this signals a need for repair or replacement but does not necessarily indicate an immediate safety hazard.
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I-4 (SR-400) has a Condition Score of 0/100 (Grade F). Its deck is rated 0/9, superstructure 0/9, and substructure 0/9 on the NBI scale. The bridge is classified as structurally deficient.
I-4 (SR-400) was built in 1999, making it 27 years old. The average bridge age in the United States is 48 years.
I-4 (SR-400) carries approximately 127K vehicles per day (average daily traffic). The bridge has 11 traffic lanes. It is 6.7 meters long and located on I-4 (SR-400) in 0.5 MI E/O Polk Pkwy, Polk County, Florida.
Yes, I-4 (SR-400) is classified as structurally deficient because at least one of its primary components (deck, superstructure, or substructure) is rated 4 or below on the 0-9 NBI scale. This does not necessarily mean it is unsafe, but it requires significant repair or replacement.
I-4 (SR-400) is located 0.5 MI E/O Polk Pkwy in Polk County, Florida. The bridge carries I-4 (SR-400) over Winston Drain. Its coordinates are 28.040122, -82.032000. It is maintained by State Highway Agency.
I-4 (SR-400) carries I-4 (SR-400) over Winston Drain. The bridge is 6.7 meters long and was built in 1999.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.