US Bridges

Alton DR over I - 459

Fair

Jefferson County, Alabama · I459 * Landfill Road · Structure no. 012501

Built
1981
44 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
339 ft
2 main spans
Daily traffic
1,150
2025 count
Owner
State
State Highway Agency

About this bridge

Alton DR over I - 459 is a steel continuous stringer/multi-beam or girder carrying Alton DR over I - 459 in Jefferson County, Alabama. It was built in 1981, so it is 44 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 1,150 vehicles a day, roughly 20% of them trucks, projected to reach 2,250 by 2045. The structure is 339 ft (103.2 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesAlton DR
CrossesI - 459
LocationI459 * Landfill Road
RouteCounty Highway 0
CountyJefferson County
StateAlabama
Coordinates33.58813, -86.64553
Functional classUrban Local

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.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 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 alignment8: Equal to present desirable criteria
Operating rating75.8 US tons
Inventory rating45.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length339 ft (103.2 m)
Longest span103 ft (31.4 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,150 (2025)
Projected traffic2,250 by 2045
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
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$3.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Alton DR over I - 459 built?

It was built in 1981, making it 44 years old in 2025.

What condition is Alton DR over I - 459 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 January 2025.

How much traffic does Alton DR over I - 459 carry?

About 1,150 vehicles per day (2025 count), of which roughly 20% are trucks.

How long is Alton DR over I - 459?

The structure is 339 ft (103.2 m) long with a longest span of 103 ft (31.4 m) and a deck 43 ft wide.

Who owns Alton DR over I - 459?

It is owned by the State Highway Agency.