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Sr-a1a over Sebastian Inlet

Indian River County, Florida · rated Poor in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Sr-a1a over Sebastian Inlet in Indian River County, Florida, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1964, making it 61 years old at the 2025 inventory.
It carries about 3,214 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 2 of the 121 inventoried bridges in Indian River County rated poor (1.7%); 2 (1.7%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 1,547 ft
Location	6.2 Miles N of SR-510
NBI structure number	880005
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
SR 9 (I-95) over 4th St. and Canal D	2014	56,000	Good
SR 9 (I-95) over 90th Ave.	2014	56,000	Good
SR 9 (I-95) over SR 60	2014	56,000	Good
SR 9 (I-95) over CR 512 (Fellsmere Rd.)	2016	54,314	Good
I-95 over Relief Canal	1968	50,500	Good
SR-60 over Lateral Canal A	1995	28,500	Fair