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I 110 Ramp over Biloxi Back Bay

Harrison County, Mississippi · rated Good in the 2025 National Bridge Inventory

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

I 110 Ramp over Biloxi Back Bay in Harrison County, Mississippi, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1988, making it 37 years old at the 2025 inventory.
It carries about 5,300 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 159 of the 302 inventoried bridges in Harrison County rated good (52.6%); 17 (5.6%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 759 ft
Location	1.2 Mi N US 90
NBI structure number	17001100240012B
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I 10 over Stream	1969	75,000	Good
I 10 over Stream	1969	66,000	Fair
I 10 over Flat Branch	1969	53,000	Good
I 10 over Delisle Bayou	1969	49,000	Good
I 10 over Parker Creek	1970	47,000	Good
I 10 over Parker Creek	1970	47,000	Good