US Bridges

Ramp D to I59 over Ramp B to I 20

Fair

Jefferson County, Alabama · I20 * I59 Intr · Structure no. 011059

Built
1974
51 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
204 ft
3 main spans
Daily traffic
13,410
2024 count
Owner
State
State Highway Agency

About this bridge

Ramp D to I59 over Ramp B to I 20 is a steel stringer/multi-beam or girder carrying Ramp D to I59 over Ramp B to I 20 in Jefferson County, Alabama. It was built in 1974, so it is 51 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 13,410 vehicles a day, roughly 11% of them trucks, projected to reach 26,683 by 2044. The structure is 204 ft (62.3 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRamp D to I59
CrossesRamp B to I 20
LocationI20 * I59 Intr
RouteInterstate 20
CountyJefferson County
StateAlabama
Coordinates33.5474, -86.7465
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 inspectionJune 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 alignment6: Equal to present minimum criteria
Operating rating83.3 US tons
Inventory rating49.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length204 ft (62.3 m)
Longest span75 ft (22.9 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,410 (2024)
Projected traffic26,683 by 2044
Trucks11%
Lanes on structure1
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp D to I59 over Ramp B to I 20 built?

It was built in 1974, making it 51 years old in 2025.

What condition is Ramp D to I59 over Ramp B to I 20 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 June 2024.

How much traffic does Ramp D to I59 over Ramp B to I 20 carry?

About 13,410 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Ramp D to I59 over Ramp B to I 20?

The structure is 204 ft (62.3 m) long with a longest span of 75 ft (22.9 m) and a deck 31 ft wide.

Who owns Ramp D to I59 over Ramp B to I 20?

It is owned by the State Highway Agency.