US Bridges

LA0164 over Dorcheat Bayou Relief

Fair

Webster Parish, Louisiana · 1.54 MI E of US 371 · Structure no. 046001220305141

Built
1982
43 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
97 ft
5 main spans
Daily traffic
3,472
2021 count
Owner
State
State Highway Agency

About this bridge

LA0164 over Dorcheat Bayou Relief is a concrete slab carrying LA0164 over Dorcheat Bayou Relief in Webster Parish, Louisiana. It was built in 1982, so it is 43 years old, younger 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 3,472 vehicles a day, roughly 19% of them trucks, projected to reach 3,819 by 2041. The structure is 97 ft (29.6 m) long and 43 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesLA0164
CrossesDorcheat Bayou Relief
Location1.54 MI E of US 371
RouteState Highway 164
CountyWebster Parish
StateLouisiana
Coordinates32.53724, -93.3225
Functional classRural Major Collector

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating68 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length97 ft (29.6 m)
Longest span19 ft (5.8 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,472 (2021)
Projected traffic3,819 by 2041
Trucks19%
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 LA0164 over Dorcheat Bayou Relief built?

It was built in 1982, making it 43 years old in 2025.

What condition is LA0164 over Dorcheat Bayou 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 September 2024.

How much traffic does LA0164 over Dorcheat Bayou Relief carry?

About 3,472 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0164 over Dorcheat Bayou Relief?

The structure is 97 ft (29.6 m) long with a longest span of 19 ft (5.8 m) and a deck 43 ft wide.

Who owns LA0164 over Dorcheat Bayou Relief?

It is owned by the State Highway Agency.