US Bridges

I - 20/59 South over Sou Ss*i Rrs * Coosa ST

Fair

Jefferson County, Alabama · I 59 * Coosa ST · Structure no. 010499

Built
1971
54 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,091 ft
15 main spans
Daily traffic
76,895
2024 count
Owner
State
State Highway Agency

About this bridge

I - 20/59 South over Sou Ss*i Rrs * Coosa ST is a steel continuous stringer/multi-beam or girder carrying I - 20/59 South over Sou Ss*i Rrs * Coosa ST in Jefferson County, Alabama. It was built in 1971, so it is 54 years old, older 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 76,895 vehicles a day, roughly 10% of them trucks, projected to reach 95,135 by 2044. The structure is 1,091 ft (332.5 m) long and 77 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI - 20/59 South
CrossesSou Ss*i Rrs * Coosa ST
LocationI 59 * Coosa ST
RouteInterstate 20
CountyJefferson County
StateAlabama
Coordinates33.54611, -86.82972
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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.2 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans15
Design loadHS 20
Structure length1,091 ft (332.5 m)
Longest span82 ft (25 m)
Deck width77 ft (23.5 m)
Roadway width75 ft (22.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76,895 (2024)
Projected traffic95,135 by 2044
Trucks10%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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$19.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I - 20/59 South over Sou Ss*i Rrs * Coosa ST built?

It was built in 1971, making it 54 years old in 2025.

What condition is I - 20/59 South over Sou Ss*i Rrs * Coosa ST 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 February 2024.

How much traffic does I - 20/59 South over Sou Ss*i Rrs * Coosa ST carry?

About 76,895 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is I - 20/59 South over Sou Ss*i Rrs * Coosa ST?

The structure is 1,091 ft (332.5 m) long with a longest span of 82 ft (25 m) and a deck 77 ft wide.

Who owns I - 20/59 South over Sou Ss*i Rrs * Coosa ST?

It is owned by the State Highway Agency.