US Bridges

Al - 3 (us 31) over Al - 149

Fair

Jefferson County, Alabama · Al 149 Interchange · Structure no. 002648

Built
1942
83 years old
Condition
Fair
inspected September 2024
Type
Arch - Deck
Concrete
Length
139 ft
1 main span
Daily traffic
30,220
2024 count
Owner
State
State Highway Agency

About this bridge

Al - 3 (us 31) over Al - 149 is a concrete arch - deck carrying Al - 3 (us 31) over Al - 149 in Jefferson County, Alabama. It was built in 1942, so it is 83 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 30,220 vehicles a day, roughly 5% of them trucks, projected to reach 38,820 by 2044. The structure is 139 ft (42.4 m) long and 58 ft wide.

Location

Open in Google Maps
CarriesAl - 3 (us 31)
CrossesAl - 149
LocationAl 149 Interchange
RouteU.S. Route 31
CountyJefferson County
StateAlabama
Coordinates33.46778, -86.7775
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
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 alignment7: Better than present minimum criteria
Operating rating65.4 US tons
Inventory rating39.2 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length139 ft (42.4 m)
Longest span70 ft (21.3 m)
Deck width58 ft (17.7 m)
Roadway width50 ft (15.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,220 (2024)
Projected traffic38,820 by 2044
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Al - 3 (us 31) over Al - 149 built?

It was built in 1942, making it 83 years old in 2025.

What condition is Al - 3 (us 31) over Al - 149 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 Al - 3 (us 31) over Al - 149 carry?

About 30,220 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Al - 3 (us 31) over Al - 149?

The structure is 139 ft (42.4 m) long with a longest span of 70 ft (21.3 m) and a deck 58 ft wide.

Who owns Al - 3 (us 31) over Al - 149?

It is owned by the State Highway Agency.