US Bridges

US 31 Nbl over Ala River Relief

Fair

Elmore County, Alabama · 0.5 MI N Montg CO Line · Structure no. 004763

Built
1954
71 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
340 ft
10 main spans
Daily traffic
11,205
2011 count
Owner
State
State Highway Agency

About this bridge

US 31 Nbl over Ala River Relief is a concrete tee beam carrying US 31 Nbl over Ala River Relief in Elmore County, Alabama. It was built in 1954, so it is 71 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 11,205 vehicles a day, roughly 8% of them trucks, projected to reach 13,424 by 2033. The structure is 340 ft (103.6 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 31 Nbl
CrossesAla River Relief
Location0.5 MI N Montg CO Line
RouteU.S. Route 31
CountyElmore County
StateAlabama
Coordinates32.4186, -86.41022
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46 US tons
Inventory rating27.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length340 ft (103.6 m)
Longest span34 ft (10.4 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,205 (2011)
Projected traffic13,424 by 2033
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
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$2.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 31 Nbl over Ala River Relief built?

It was built in 1954, making it 71 years old in 2025.

What condition is US 31 Nbl over Ala River Relief 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 May 2023.

How much traffic does US 31 Nbl over Ala River Relief carry?

About 11,205 vehicles per day (2011 count), of which roughly 8% are trucks.

How long is US 31 Nbl over Ala River Relief?

The structure is 340 ft (103.6 m) long with a longest span of 34 ft (10.4 m) and a deck 32 ft wide.

Who owns US 31 Nbl over Ala River Relief?

It is owned by the State Highway Agency.