Home › Alabama › Jefferson County › Flyover Ramp A over I-459 and Ramp B

Flyover Ramp A over I-459 and Ramp B

Jefferson County, Alabama · rated Fair in the 2025 National Bridge Inventory

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

Flyover Ramp A over I-459 and Ramp B in Jefferson County, Alabama, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 2002, making it 23 years old at the 2025 inventory.
It carries about 69,970 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 836 of the 1,069 inventoried bridges in Jefferson County rated fair (78.2%); 24 (2.2%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Continuous steel stringer or multi-beam girder
Length	about 919 ft
Location	.1 Mi. So. US 31
NBI structure number	017783
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I - 20/59 East over I - 20/59 West	2004	157,350	Good
I - 20/59 over Stream	1973	140,400	Fair
I - 65 over 6TH Ave. South	1970	138,490	Fair
I - 65 over 2ND Ave No	1969	136,580	Fair
I - 65 over 4TH. Ave. North	1969	136,580	Fair
I - 65 over 3RD Ave North	1969	136,580	Fair