US Bridges

LA0160 over Dorcheat Bayou Relief

PoorPosted for load

Webster Parish, Louisiana · 1.22 MI West of LA 3008 · Structure no. 046000850507651

Built
1977
48 years old
Condition
Poor
inspected September 2023
Type
Slab
Concrete
Length
115 ft
6 main spans
Daily traffic
537
2021 count
Owner
State
State Highway Agency

About this bridge

LA0160 over Dorcheat Bayou Relief is a concrete slab carrying LA0160 over Dorcheat Bayou Relief in Webster Parish, Louisiana. It was built in 1977, so it is 48 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 4 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. Its operating status is: posted for load restriction.

It carries about 537 vehicles a day, roughly 25% of them trucks, projected to reach 590 by 2041. The structure is 115 ft (35.1 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesLA0160
CrossesDorcheat Bayou Relief
Location1.22 MI West of LA 3008
RouteState Highway 160
Coordinates32.84868, -93.3492
Functional classRural Minor 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
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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.3 US tons
Inventory rating19 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length115 ft (35.1 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic537 (2021)
Projected traffic590 by 2041
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed9.9 mi (16 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 LA0160 over Dorcheat Bayou Relief built?

It was built in 1977, making it 48 years old in 2025.

What condition is LA0160 over Dorcheat Bayou Relief 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 September 2023.

How much traffic does LA0160 over Dorcheat Bayou Relief carry?

About 537 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is LA0160 over Dorcheat Bayou Relief?

The structure is 115 ft (35.1 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns LA0160 over Dorcheat Bayou Relief?

It is owned by the State Highway Agency.