US Bridges

LA0091 over Spencer Canal

PoorPosted for load

Vermilion Parish, Louisiana · 1.0 MI S. of LA 3143 · Structure no. 035702120102981

Built
1970
55 years old
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
77 ft
4 main spans
Daily traffic
388
2021 count
Owner
State
State Highway Agency

About this bridge

LA0091 over Spencer Canal is a wood or timber stringer/multi-beam or girder carrying LA0091 over Spencer Canal in Vermilion 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 poor condition with a lowest component rating of 3 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 388 vehicles a day, roughly 12% of them trucks, projected to reach 426 by 2041. The structure is 77 ft (23.5 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesLA0091
CrossesSpencer Canal
Location1.0 MI S. of LA 3143
RouteState Highway 91
Coordinates29.96268, -92.51398
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating12.5 US tons
Inventory rating7.5 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadH 15
Structure length77 ft (23.5 m)
Longest span19 ft (5.8 m)
Deck width32 ft (9.9 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic388 (2021)
Projected traffic426 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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 LA0091 over Spencer Canal built?

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

What condition is LA0091 over Spencer Canal 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 March 2024.

How much traffic does LA0091 over Spencer Canal carry?

About 388 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0091 over Spencer Canal?

The structure is 77 ft (23.5 m) long with a longest span of 19 ft (5.8 m) and a deck 32 ft wide.

Who owns LA0091 over Spencer Canal?

It is owned by the State Highway Agency.