US Bridges

Sittig RD over Drainage Canal

Fair

Acadia Parish, Louisiana · 0.03 MI W. of LA 13 · Structure no. 030130289922481

Built
1970
55 years old
Condition
Fair
inspected July 2024
Type
Channel Beam
Prestressed Concrete
Length
53 ft
2 main spans
Daily traffic
2,736
2020 count
Owner
County
County Highway Agency

About this bridge

Sittig RD over Drainage Canal is a prestressed concrete channel beam carrying Sittig RD over Drainage Canal in Acadia Parish, Louisiana. It was built in 1970, so it is 55 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 6 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 2,736 vehicles a day, projected to reach 3,009 by 2040. The structure is 53 ft (16.2 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSittig RD
CrossesDrainage Canal
Location0.03 MI W. of LA 13
RouteCounty Highway 0
Coordinates30.48006, -92.41345
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating45.7 US tons
Inventory rating28.5 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length53 ft (16.2 m)
Longest span26 ft (7.9 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,736 (2020)
Projected traffic3,009 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Sittig RD over Drainage Canal built?

It was built in 1970, making it 55 years old in 2025.

What condition is Sittig RD over Drainage Canal 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 July 2024.

How much traffic does Sittig RD over Drainage Canal carry?

About 2,736 vehicles per day (2020 count).

How long is Sittig RD over Drainage Canal?

The structure is 53 ft (16.2 m) long with a longest span of 26 ft (7.9 m) and a deck 22 ft wide.

Who owns Sittig RD over Drainage Canal?

It is owned by the County Highway Agency.