US Bridges

Dewey Marks Ln. over Wauksha Bayou

Fair

St. Landry Parish, Louisiana · 0.2 MI Sw. of LA 359 · Structure no. 034930396915741

Built
1994
31 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
95 ft
5 main spans
Daily traffic
50
2020 count
Owner
County
County Highway Agency

About this bridge

Dewey Marks Ln. over Wauksha Bayou is a concrete slab carrying Dewey Marks Ln. over Wauksha Bayou in St. Landry Parish, Louisiana. It was built in 1994, so it is 31 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 50 vehicles a day, projected to reach 55 by 2040. The structure is 95 ft (29 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesDewey Marks Ln.
CrossesWauksha Bayou
Location0.2 MI Sw. of LA 359
RouteCounty Highway 0
CountySt. Landry Parish
StateLouisiana
Coordinates30.66038, -91.95722
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length95 ft (29 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2020)
Projected traffic55 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Dewey Marks Ln. over Wauksha Bayou built?

It was built in 1994, making it 31 years old in 2025.

What condition is Dewey Marks Ln. over Wauksha Bayou 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 April 2023.

How much traffic does Dewey Marks Ln. over Wauksha Bayou carry?

About 50 vehicles per day (2020 count).

How long is Dewey Marks Ln. over Wauksha Bayou?

The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Dewey Marks Ln. over Wauksha Bayou?

It is owned by the County Highway Agency.