US Bridges

SR1/US431 over Alabama/Tennessee R/R

Fair

Calhoun County, Alabama · 2.9 MI No JCT SR 144 · Structure no. 010531

Built
1971
54 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
155 ft
3 main spans
Daily traffic
6,306
2023 count
Owner
State
State Highway Agency

About this bridge

SR1/US431 over Alabama/Tennessee R/R is a steel stringer/multi-beam or girder carrying SR1/US431 over Alabama/Tennessee R/R in Calhoun 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 6,306 vehicles a day, roughly 8% of them trucks, projected to reach 8,828 by 2043. The structure is 155 ft (47.2 m) long and 41 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesSR1/US431
CrossesAlabama/Tennessee R/R
Location2.9 MI No JCT SR 144
RouteU.S. Route 431
CountyCalhoun County
StateAlabama
Coordinates33.81887, -85.90718
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating78 US tons
Inventory rating46.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length155 ft (47.2 m)
Longest span52 ft (15.8 m)
Deck width41 ft (12.4 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,306 (2023)
Projected traffic8,828 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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 SR1/US431 over Alabama/Tennessee R/R built?

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

What condition is SR1/US431 over Alabama/Tennessee R/R 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 SR1/US431 over Alabama/Tennessee R/R carry?

About 6,306 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR1/US431 over Alabama/Tennessee R/R?

The structure is 155 ft (47.2 m) long with a longest span of 52 ft (15.8 m) and a deck 41 ft wide.

Who owns SR1/US431 over Alabama/Tennessee R/R?

It is owned by the State Highway Agency.