US Bridges

LA1100 over Ditch

Fair

Acadia Parish, Louisiana · 0.8 MI S of LA 365 · Structure no. 030103890202681

Built
1963
62 years old
Condition
Fair
inspected February 2023
Type
Culvert
Steel
Length
45 ft
6 main spans
Daily traffic
198
2021 count
Owner
State
State Highway Agency

About this bridge

LA1100 over Ditch is a steel culvert carrying LA1100 over Ditch in Acadia Parish, Louisiana. It was built in 1963, so it is 62 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 198 vehicles a day, roughly 13% of them trucks, projected to reach 217 by 2041. The structure is 45 ft (13.7 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLA1100
CrossesDitch
Location0.8 MI S of LA 365
RouteState Highway 1100
CountyAcadia Parish
StateLouisiana
Coordinates30.33508, -92.1951
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating82.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans6
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span6 ft (1.8 m)
Deck width36 ft (11.1 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic198 (2021)
Projected traffic217 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 LA1100 over Ditch built?

It was built in 1963, making it 62 years old in 2025.

What condition is LA1100 over Ditch 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 LA1100 over Ditch carry?

About 198 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA1100 over Ditch?

The structure is 45 ft (13.7 m) long with a longest span of 6 ft (1.8 m) and a deck 36 ft wide.

Who owns LA1100 over Ditch?

It is owned by the State Highway Agency.