US Bridges

I - 20/59 South over Jay Bird Road

Fair

Jefferson County, Alabama · I59 * Jay Bird RD · Structure no. 012310

Built
1980
45 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
365 ft
3 main spans
Daily traffic
46,776
2022 count
Owner
State
State Highway Agency

About this bridge

I - 20/59 South over Jay Bird Road is a steel continuous stringer/multi-beam or girder carrying I - 20/59 South over Jay Bird Road in Jefferson County, Alabama. It was built in 1980, so it is 45 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 46,776 vehicles a day, roughly 8% of them trucks, projected to reach 70,164 by 2042. The structure is 365 ft (111.4 m) long and 41 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesI - 20/59 South
CrossesJay Bird Road
LocationI59 * Jay Bird RD
RouteInterstate 20
CountyJefferson County
StateAlabama
Coordinates33.45583, -86.95833
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 inspectionJuly 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 rating88.6 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length365 ft (111.4 m)
Longest span157 ft (47.9 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,776 (2022)
Projected traffic70,164 by 2042
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed8.1 mi (13 km)
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$3.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I - 20/59 South over Jay Bird Road built?

It was built in 1980, making it 45 years old in 2025.

What condition is I - 20/59 South over Jay Bird Road 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 July 2023.

How much traffic does I - 20/59 South over Jay Bird Road carry?

About 46,776 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is I - 20/59 South over Jay Bird Road?

The structure is 365 ft (111.4 m) long with a longest span of 157 ft (47.9 m) and a deck 41 ft wide.

Who owns I - 20/59 South over Jay Bird Road?

It is owned by the State Highway Agency.