US Bridges

LA0157 over I-20

Fair

Bossier Parish, Louisiana · LA 157 over I-20 · Structure no. 040800820305591

Built
1975
50 years old
Condition
Fair
inspected November 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
343 ft
4 main spans
Daily traffic
5,436
2021 count
Owner
State
State Highway Agency

About this bridge

LA0157 over I-20 is a steel continuous girder and floorbeam system carrying LA0157 over I-20 in Bossier Parish, Louisiana. It was built in 1975, so it is 50 years old, older than the Louisiana average of 43 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 5,436 vehicles a day, roughly 10% of them trucks, projected to reach 5,979 by 2041. The structure is 343 ft (104.5 m) long and 42 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLA0157
CrossesI-20
LocationLA 157 over I-20
RouteState Highway 157
Coordinates32.54881, -93.5152
Functional classUrban Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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 rating45.7 US tons
Inventory rating35.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length343 ft (104.5 m)
Longest span108 ft (32.9 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,436 (2021)
Projected traffic5,979 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was LA0157 over I-20 built?

It was built in 1975, making it 50 years old in 2025.

What condition is LA0157 over I-20 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 November 2023.

How much traffic does LA0157 over I-20 carry?

About 5,436 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0157 over I-20?

The structure is 343 ft (104.5 m) long with a longest span of 108 ft (32.9 m) and a deck 42 ft wide.

Who owns LA0157 over I-20?

It is owned by the State Highway Agency.