US Bridges

LA0133 over I-20

Fair

Richland Parish, Louisiana · LA 133 over I-20 · Structure no. 054201710307551

Built
1968
57 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
252 ft
4 main spans
Daily traffic
867
2021 count
Owner
State
State Highway Agency

About this bridge

LA0133 over I-20 is a prestressed concrete stringer/multi-beam or girder carrying LA0133 over I-20 in Richland Parish, Louisiana. It was built in 1968, so it is 57 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 867 vehicles a day, roughly 15% of them trucks, projected to reach 953 by 2041. The structure is 252 ft (76.8 m) long and 33 ft wide.

CarriesLA0133
CrossesI-20
LocationLA 133 over I-20
RouteState Highway 133
Coordinates32.47675, -91.8607
Functional classRural Major Collector

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.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96 US tons
Inventory rating51 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length252 ft (76.8 m)
Longest span75 ft (22.9 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic867 (2021)
Projected traffic953 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 LA0133 over I-20 built?

It was built in 1968, making it 57 years old in 2025.

What condition is LA0133 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 July 2023.

How much traffic does LA0133 over I-20 carry?

About 867 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0133 over I-20?

The structure is 252 ft (76.8 m) long with a longest span of 75 ft (22.9 m) and a deck 33 ft wide.

Who owns LA0133 over I-20?

It is owned by the State Highway Agency.