US Bridges

I0020 over L & NW R/R

Fair

Bienville Parish, Louisiana · .56 MI West of LA 154 · Structure no. 040704510406522

Built
1964
61 years old, rebuilt 1987
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
352 ft
5 main spans
Daily traffic
37,514
2021 count
Owner
State
State Highway Agency

About this bridge

I0020 over L & NW R/R is a prestressed concrete stringer/multi-beam or girder carrying I0020 over L & NW R/R in Bienville Parish, Louisiana. It was built in 1964 and reconstructed in 1987, so it is 61 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 5 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 37,514 vehicles a day, roughly 36% of them trucks, projected to reach 41,265 by 2041. The structure is 352 ft (107.3 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI0020
CrossesL & NW R/R
Location.56 MI West of LA 154
RouteInterstate 20
CountyBienville Parish
StateLouisiana
Coordinates32.5635, -93.0627
Functional classRural 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length352 ft (107.3 m)
Longest span75 ft (22.9 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,514 (2021)
Projected traffic41,265 by 2041
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I0020 over L & NW R/R built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1987.

What condition is I0020 over L & NW R/R 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 May 2023.

How much traffic does I0020 over L & NW R/R carry?

About 37,514 vehicles per day (2021 count), of which roughly 36% are trucks.

How long is I0020 over L & NW R/R?

The structure is 352 ft (107.3 m) long with a longest span of 75 ft (22.9 m) and a deck 43 ft wide.

Who owns I0020 over L & NW R/R?

It is owned by the State Highway Agency.