US Bridges

Walnut CR RD over I 20

FairPosted for load

Lincoln Parish, Louisiana · .9 MI West of LA 507 · Structure no. 053104510504731

Built
1963
62 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
287 ft
3 main spans
Daily traffic
2,930
2015 count
Owner
State
State Highway Agency

About this bridge

Walnut CR RD over I 20 is a steel stringer/multi-beam or girder carrying Walnut CR RD over I 20 in Lincoln Parish, Louisiana. It was built in 1963, so it is 62 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. Its operating status is: posted for load restriction.

It carries about 2,930 vehicles a day, projected to reach 3,223 by 2035. The structure is 287 ft (87.5 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWalnut CR RD
CrossesI 20
Location.9 MI West of LA 507
RouteCounty Highway 0
CountyLincoln Parish
StateLouisiana
Coordinates32.54791, -92.8006
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating18.5 US tons
Inventory rating14.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadH 15
Structure length287 ft (87.5 m)
Longest span80 ft (24.4 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,930 (2015)
Projected traffic3,223 by 2035
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Walnut CR RD over I 20 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Walnut CR RD 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 December 2023.

How much traffic does Walnut CR RD over I 20 carry?

About 2,930 vehicles per day (2015 count).

How long is Walnut CR RD over I 20?

The structure is 287 ft (87.5 m) long with a longest span of 80 ft (24.4 m) and a deck 30 ft wide.

Who owns Walnut CR RD over I 20?

It is owned by the State Highway Agency.