US Bridges

I-20 over Branch

Fair

Calhoun County, Alabama · 0.8 MI E JCT SR 21 · Structure no. 009860

Built
1969
56 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
73 ft
5 main spans
Daily traffic
18,931
2022 count
Owner
State
State Highway Agency

About this bridge

I-20 over Branch is a concrete culvert carrying I-20 over Branch in Calhoun County, Alabama. It was built in 1969, so it is 56 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 18,931 vehicles a day, roughly 40% of them trucks, projected to reach 26,503 by 2042. The structure is 73 ft (22.2 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-20
CrossesBranch
Location0.8 MI E JCT SR 21
RouteInterstate 20
CountyCalhoun County
StateAlabama
Coordinates33.60854, -85.80114
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: 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 rating30.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length73 ft (22.2 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,931 (2022)
Projected traffic26,503 by 2042
Trucks40%
Lanes on structure3
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$1.4 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-20 over Branch built?

It was built in 1969, making it 56 years old in 2025.

What condition is I-20 over Branch 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 November 2023.

How much traffic does I-20 over Branch carry?

About 18,931 vehicles per day (2022 count), of which roughly 40% are trucks.

How long is I-20 over Branch?

The structure is 73 ft (22.2 m) long with a longest span of 14 ft (4.3 m).

Who owns I-20 over Branch?

It is owned by the State Highway Agency.