US Bridges

I-20 over Choccolocco Creek

Fair

Calhoun County, Alabama · 0.1 MI W JCT US 431 · Structure no. 009510

Built
1968
57 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
270 ft
3 main spans
Daily traffic
23,717
2023 count
Owner
State
State Highway Agency

About this bridge

I-20 over Choccolocco Creek is a steel continuous stringer/multi-beam or girder carrying I-20 over Choccolocco Creek in Calhoun County, Alabama. It was built in 1968, so it is 57 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 5 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 23,717 vehicles a day, roughly 40% of them trucks, projected to reach 33,203 by 2043. The structure is 270 ft (82.3 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-20
CrossesChoccolocco Creek
Location0.1 MI W JCT US 431
RouteInterstate 20
CountyCalhoun County
StateAlabama
Coordinates33.61749, -85.72565
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length270 ft (82.3 m)
Longest span80 ft (24.4 m)
Deck width43 ft (13.1 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,717 (2023)
Projected traffic33,203 by 2043
Trucks40%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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$2.9 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-20 over Choccolocco Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-20 over Choccolocco Creek 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 March 2024.

How much traffic does I-20 over Choccolocco Creek carry?

About 23,717 vehicles per day (2023 count), of which roughly 40% are trucks.

How long is I-20 over Choccolocco Creek?

The structure is 270 ft (82.3 m) long with a longest span of 80 ft (24.4 m) and a deck 43 ft wide.

Who owns I-20 over Choccolocco Creek?

It is owned by the State Highway Agency.