US Bridges

LA0151 over I-20

Poor

Bienville Parish, Louisiana · LA 151 over I-20 · Structure no. 040700890500721

Built
1963
62 years old
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
267 ft
2 main spans
Daily traffic
9,385
2021 count
Owner
State
State Highway Agency

About this bridge

LA0151 over I-20 is a steel stringer/multi-beam or girder carrying LA0151 over I-20 in Bienville 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 9,385 vehicles a day, roughly 19% of them trucks, projected to reach 10,323 by 2041. The structure is 267 ft (81.4 m) long and 33 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesLA0151
CrossesI-20
LocationLA 151 over I-20
RouteState Highway 151
CountyBienville Parish
StateLouisiana
Coordinates32.56318, -92.9104
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating23.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+3 approach)
Design loadHS 20
Structure length267 ft (81.4 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 traffic9,385 (2021)
Projected traffic10,323 by 2041
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed13 mi (21 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 LA0151 over I-20 built?

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

What condition is LA0151 over I-20 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does LA0151 over I-20 carry?

About 9,385 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0151 over I-20?

The structure is 267 ft (81.4 m) long with a longest span of 75 ft (22.9 m) and a deck 33 ft wide.

Who owns LA0151 over I-20?

It is owned by the State Highway Agency.