US Bridges

I459 over I20

Fair

Jefferson County, Alabama · I20 I459 Intr · Structure no. 013158

Built
1984
41 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
815 ft
6 main spans
Daily traffic
91,688
2022 count
Owner
State
State Highway Agency

About this bridge

I459 over I20 is a steel stringer/multi-beam or girder carrying I459 over I20 in Jefferson County, Alabama. It was built in 1984, so it is 41 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 91,688 vehicles a day, roughly 14% of them trucks, projected to reach 165,599 by 2042. The structure is 815 ft (248.4 m) long and 59 ft wide.

Location

Open in Google Maps
CarriesI459
CrossesI20
LocationI20 I459 Intr
RouteInterstate 459
CountyJefferson County
StateAlabama
Coordinates33.54327, -86.64313
Functional classUrban Principal Arterial - Interstate

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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating32.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length815 ft (248.4 m)
Longest span170 ft (51.8 m)
Deck width59 ft (17.9 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deck17 ft (5 m)

Traffic and service

Average daily traffic91,688 (2022)
Projected traffic165,599 by 2042
Trucks14%
Lanes on structure3
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate 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$10.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I459 over I20 built?

It was built in 1984, making it 41 years old in 2025.

What condition is I459 over I20 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 March 2023.

How much traffic does I459 over I20 carry?

About 91,688 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is I459 over I20?

The structure is 815 ft (248.4 m) long with a longest span of 170 ft (51.8 m) and a deck 59 ft wide.

Who owns I459 over I20?

It is owned by the State Highway Agency.