US Bridges

Al - 3 (us 31) over 29 TH Ave No

Fair

Jefferson County, Alabama · US 31 * 29 TH Ave No · Structure no. 009602

Built
1968
57 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,152 ft
17 main spans
Daily traffic
11,590
2023 count
Owner
State
State Highway Agency

About this bridge

Al - 3 (us 31) over 29 TH Ave No is a steel continuous stringer/multi-beam or girder carrying Al - 3 (us 31) over 29 TH Ave No in Jefferson County, Alabama. It was built in 1968, so it is 57 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 11,590 vehicles a day, roughly 5% of them trucks, projected to reach 14,888 by 2043. The structure is 1,152 ft (351.1 m) long and 61 ft wide.

Location

Open in Google Maps
CarriesAl - 3 (us 31)
Crosses29 TH Ave No
LocationUS 31 * 29 TH Ave No
RouteU.S. Route 31
CountyJefferson County
StateAlabama
Coordinates33.54806, -86.81667
Functional classUrban 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
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 inspectionMay 2023
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 alignment7: Better than present minimum criteria
Operating rating63.5 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans17 (+2 approach)
Design loadHS 20
Structure length1,152 ft (351.1 m)
Longest span80 ft (24.4 m)
Deck width61 ft (18.5 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,590 (2023)
Projected traffic14,888 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed—
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$15.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Al - 3 (us 31) over 29 TH Ave No built?

It was built in 1968, making it 57 years old in 2025.

What condition is Al - 3 (us 31) over 29 TH Ave No 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 Al - 3 (us 31) over 29 TH Ave No carry?

About 11,590 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Al - 3 (us 31) over 29 TH Ave No?

The structure is 1,152 ft (351.1 m) long with a longest span of 80 ft (24.4 m) and a deck 61 ft wide.

Who owns Al - 3 (us 31) over 29 TH Ave No?

It is owned by the State Highway Agency.