US Bridges

US 231 Nbl over Tallapoosa River

Fair

Montgomery County, Alabama · Montgomery-Elmore CO Line · Structure no. 015757

Built
1993
32 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,076 ft
5 main spans
Daily traffic
16,115
2013 count
Owner
State
State Highway Agency

About this bridge

US 231 Nbl over Tallapoosa River is a prestressed concrete stringer/multi-beam or girder carrying US 231 Nbl over Tallapoosa River in Montgomery County, Alabama. It was built in 1993, so it is 32 years old, younger 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 16,115 vehicles a day, roughly 4% of them trucks, projected to reach 21,962 by 2033. The structure is 1,076 ft (328 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 231 Nbl
CrossesTallapoosa River
LocationMontgomery-Elmore CO Line
RouteU.S. Route 231
CountyMontgomery County
StateAlabama
Coordinates32.45478, -86.20464
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.4 US tons
Inventory rating32.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5 (+11 approach)
Design loadHS 20
Structure length1,076 ft (328 m)
Longest span125 ft (38.1 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,115 (2013)
Projected traffic21,962 by 2033
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost$10.6 million (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 231 Nbl over Tallapoosa River built?

It was built in 1993, making it 32 years old in 2025.

What condition is US 231 Nbl over Tallapoosa River 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 2024.

How much traffic does US 231 Nbl over Tallapoosa River carry?

About 16,115 vehicles per day (2013 count), of which roughly 4% are trucks.

How long is US 231 Nbl over Tallapoosa River?

The structure is 1,076 ft (328 m) long with a longest span of 125 ft (38.1 m) and a deck 43 ft wide.

Who owns US 231 Nbl over Tallapoosa River?

It is owned by the State Highway Agency.