US Bridges

I - 20 West over Montevallo Road

Fair

Jefferson County, Alabama · I 20 * Montevallo RD · Structure no. 011068

Built
1974
51 years old, rebuilt 1989
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
226 ft
3 main spans
Daily traffic
27,875
2024 count
Owner
State
State Highway Agency

About this bridge

I - 20 West over Montevallo Road is a steel continuous stringer/multi-beam or girder carrying I - 20 West over Montevallo Road in Jefferson County, Alabama. It was built in 1974 and reconstructed in 1989, so it is 51 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 27,875 vehicles a day, roughly 16% of them trucks, projected to reach 33,677 by 2044. The structure is 226 ft (68.9 m) long and 55 ft wide.

Location

Open in Google Maps
CarriesI - 20 West
CrossesMontevallo Road
LocationI 20 * Montevallo RD
RouteInterstate 20
CountyJefferson County
StateAlabama
Coordinates33.53222, -86.71444
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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.5 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length226 ft (68.9 m)
Longest span104 ft (31.7 m)
Deck width55 ft (16.7 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,875 (2024)
Projected traffic33,677 by 2044
Trucks16%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an 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$3.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I - 20 West over Montevallo Road built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 1989.

What condition is I - 20 West over Montevallo 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 2024.

How much traffic does I - 20 West over Montevallo Road carry?

About 27,875 vehicles per day (2024 count), of which roughly 16% are trucks.

How long is I - 20 West over Montevallo Road?

The structure is 226 ft (68.9 m) long with a longest span of 104 ft (31.7 m) and a deck 55 ft wide.

Who owns I - 20 West over Montevallo Road?

It is owned by the State Highway Agency.