US Bridges

US 31 over CSX RR 000429.6 Active

Fair

Chilton County, Alabama · R.R 1.9 MI S Shelby Line · Structure no. 002531

Built
1941
84 years old
Condition
Fair
inspected February 2025
Type
Tee Beam
Concrete
Length
154 ft
1 main span
Daily traffic
4,182
2020 count
Owner
State
State Highway Agency

About this bridge

US 31 over CSX RR 000429.6 Active is a concrete tee beam carrying US 31 over CSX RR 000429.6 Active in Chilton County, Alabama. It was built in 1941, so it is 84 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 4,182 vehicles a day, roughly 8% of them trucks, projected to reach 6,853 by 2040. The structure is 154 ft (46.9 m) long and 37 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesUS 31
CrossesCSX RR 000429.6 Active
LocationR.R 1.9 MI S Shelby Line
RouteU.S. Route 31
CountyChilton County
StateAlabama
Coordinates33.04053, -86.76172
Functional classRural Minor 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2025
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40.8 US tons
Inventory rating24.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadH 15
Structure length154 ft (46.9 m)
Longest span46 ft (14 m)
Deck width37 ft (11.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,182 (2020)
Projected traffic6,853 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

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$1.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 31 over CSX RR 000429.6 Active built?

It was built in 1941, making it 84 years old in 2025.

What condition is US 31 over CSX RR 000429.6 Active 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 US 31 over CSX RR 000429.6 Active carry?

About 4,182 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is US 31 over CSX RR 000429.6 Active?

The structure is 154 ft (46.9 m) long with a longest span of 46 ft (14 m) and a deck 37 ft wide.

Who owns US 31 over CSX RR 000429.6 Active?

It is owned by the State Highway Agency.