US Bridges

CO 31 over Acl Railroad

Fair

Clay County, Alabama · 0.3 M N Highland · Structure no. 013079

Built
1919
106 years old, rebuilt 1984
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
148 ft
3 main spans
Daily traffic
346
2016 count
Owner
County
County Highway Agency

About this bridge

CO 31 over Acl Railroad is a prestressed concrete stringer/multi-beam or girder carrying CO 31 over Acl Railroad in Clay County, Alabama. It was built in 1919 and reconstructed in 1984, so it is 106 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 346 vehicles a day, roughly 3% of them trucks, projected to reach 514 by 2036. The structure is 148 ft (45.1 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCO 31
CrossesAcl Railroad
Location0.3 M N Highland
RouteCounty Highway 31
CountyClay County
StateAlabama
Coordinates33.35958, -85.82107
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Last inspectionFebruary 2025
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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating41.6 US tons
Inventory rating25.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length148 ft (45.1 m)
Longest span61 ft (18.6 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic346 (2016)
Projected traffic514 by 2036
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was CO 31 over Acl Railroad built?

It was built in 1919, making it 106 years old in 2025. It was reconstructed in 1984.

What condition is CO 31 over Acl Railroad 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 2025.

How much traffic does CO 31 over Acl Railroad carry?

About 346 vehicles per day (2016 count), of which roughly 3% are trucks.

How long is CO 31 over Acl Railroad?

The structure is 148 ft (45.1 m) long with a longest span of 61 ft (18.6 m) and a deck 27 ft wide.

Who owns CO 31 over Acl Railroad?

It is owned by the County Highway Agency.