US Bridges

US 431 over Atn RR

Fair

Etowah County, Alabama · US 431 .6 MI So.Us 278 · Structure no. 006526

Built
1959
66 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
240 ft
5 main spans
Daily traffic
9,450
2022 count
Owner
State
State Highway Agency

About this bridge

US 431 over Atn RR is a concrete tee beam carrying US 431 over Atn RR in Etowah County, Alabama. It was built in 1959, so it is 66 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 9,450 vehicles a day, roughly 13% of them trucks, projected to reach 13,230 by 2042. The structure is 240 ft (73.2 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 431
CrossesAtn RR
LocationUS 431 .6 MI So.Us 278
RouteU.S. Route 431
CountyEtowah County
StateAlabama
Coordinates33.98904, -85.96686
Functional classUrban Other Principal Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72.4 US tons
Inventory rating43.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span48 ft (14.6 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,450 (2022)
Projected traffic13,230 by 2042
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 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$1.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 431 over Atn RR built?

It was built in 1959, making it 66 years old in 2025.

What condition is US 431 over Atn RR 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 September 2023.

How much traffic does US 431 over Atn RR carry?

About 9,450 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is US 431 over Atn RR?

The structure is 240 ft (73.2 m) long with a longest span of 48 ft (14.6 m) and a deck 31 ft wide.

Who owns US 431 over Atn RR?

It is owned by the State Highway Agency.