US Bridges

Flyover Ramp B over Ramp C

Fair

Jefferson County, Alabama · .1 Mi. So. US 31 · Structure no. 017784

Built
2002
23 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
700 ft
3 main spans
Daily traffic
6,997
2024 count
Owner
State
State Highway Agency

About this bridge

Flyover Ramp B over Ramp C is a steel continuous stringer/multi-beam or girder carrying Flyover Ramp B over Ramp C in Jefferson County, Alabama. It was built in 2002, so it is 23 years old, younger than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 6,997 vehicles a day, roughly 17% of them trucks, projected to reach 8,847 by 2044. The structure is 700 ft (213.3 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFlyover Ramp B
CrossesRamp C
Location.1 Mi. So. US 31
RouteInterstate 459
CountyJefferson County
StateAlabama
Coordinates33.38045, -86.81335
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating64 US tons
Inventory rating39.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length700 ft (213.3 m)
Longest span300 ft (91.3 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic6,997 (2024)
Projected traffic8,847 by 2044
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$6.4 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Flyover Ramp B over Ramp C built?

It was built in 2002, making it 23 years old in 2025.

What condition is Flyover Ramp B over Ramp C in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does Flyover Ramp B over Ramp C carry?

About 6,997 vehicles per day (2024 count), of which roughly 17% are trucks.

How long is Flyover Ramp B over Ramp C?

The structure is 700 ft (213.3 m) long with a longest span of 300 ft (91.3 m) and a deck 40 ft wide.

Who owns Flyover Ramp B over Ramp C?

It is owned by the State Highway Agency.