US Bridges

Al - 3 North over Al - 4 * 3rd Ave So

Fair

Jefferson County, Alabama · US 31 * 3rd Ave So · Structure no. 009970

Built
1969
56 years old
Condition
Fair
inspected February 2025
Type
Tee Beam
Concrete Continuous
Length
205 ft
3 main spans
Daily traffic
36,875
2025 count
Owner
State
State Highway Agency

About this bridge

Al - 3 North over Al - 4 * 3rd Ave So is a concrete continuous tee beam carrying Al - 3 North over Al - 4 * 3rd Ave So in Jefferson County, Alabama. It was built in 1969, so it is 56 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 36,875 vehicles a day, roughly 3% of them trucks, projected to reach 47,368 by 2045. The structure is 205 ft (62.5 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesAl - 3 North
CrossesAl - 4 * 3rd Ave So
LocationUS 31 * 3rd Ave So
RouteU.S. Route 31
CountyJefferson County
StateAlabama
Coordinates33.51361, -86.79389
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating63.3 US tons
Inventory rating39.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length205 ft (62.5 m)
Longest span78 ft (23.8 m)
Deck width55 ft (16.8 m)
Roadway width53 ft (16.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,875 (2025)
Projected traffic47,368 by 2045
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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$3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Al - 3 North over Al - 4 * 3rd Ave So built?

It was built in 1969, making it 56 years old in 2025.

What condition is Al - 3 North over Al - 4 * 3rd Ave So 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 Al - 3 North over Al - 4 * 3rd Ave So carry?

About 36,875 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Al - 3 North over Al - 4 * 3rd Ave So?

The structure is 205 ft (62.5 m) long with a longest span of 78 ft (23.8 m) and a deck 55 ft wide.

Who owns Al - 3 North over Al - 4 * 3rd Ave So?

It is owned by the State Highway Agency.