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HomeFloridaHillsborough County › I-4 EB (SR-400) over US-41 (50TH St)

I-4 EB (SR-400) over US-41 (50TH St)

Hillsborough County, Florida · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled

View this bridge on a map → (27.96767, -82.40164)

Component ratings

ComponentRating (2025)FHWA scale meaning
Deck7Good condition
Superstructure8Very good condition
Substructure8Very good condition

Bridge details

StructureSteel stringer or multi-beam girder
Lengthabout 216 ft
Location3.3 Mi W/o US-301
NBI structure number100673
Condition classGood

Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.

Busiest bridges in Hillsborough County

BridgeBuiltVehicles/dayCondition
I-275 (SR-93) over Hillsborough River1964250,000Fair
I-275 NB (SR-93) over Hillsborough River1964250,000Fair
I-4 WB over Palm Avenue1963236,000Good
I-275 NB (SR-93) over Palm Avenue1963236,000Fair
I-275 SB (SR-93) over Business Us-41(sr-685)1964222,000Fair
I-275 NB over Cypress Street2015210,000Good

All bridges nearby: Hillsborough County, FL bridge conditions · every bridge in Hillsborough County · Florida bridges.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.