US Bridges

LA0026 over Bayou Blue Relief

Fair

Allen Parish, Louisiana · 3.5 MI S of LA 104 · Structure no. 070200540203501

Built
1957
68 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
2,027
2022 count
Owner
State
State Highway Agency

About this bridge

LA0026 over Bayou Blue Relief is a concrete slab carrying LA0026 over Bayou Blue Relief in Allen Parish, Louisiana. It was built in 1957, so it is 68 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 2,027 vehicles a day, roughly 18% of them trucks, projected to reach 2,229 by 2042. The structure is 100 ft (30.5 m) long and 29 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesLA0026
CrossesBayou Blue Relief
Location3.5 MI S of LA 104
RouteState Highway 26
CountyAllen Parish
StateLouisiana
Coordinates30.53937, -92.67145
Functional classRural 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
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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,027 (2022)
Projected traffic2,229 by 2042
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed21.1 mi (34 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0026 over Bayou Blue Relief built?

It was built in 1957, making it 68 years old in 2025.

What condition is LA0026 over Bayou Blue Relief 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 February 2023.

How much traffic does LA0026 over Bayou Blue Relief carry?

About 2,027 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is LA0026 over Bayou Blue Relief?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.

Who owns LA0026 over Bayou Blue Relief?

It is owned by the State Highway Agency.