US Bridges

LA0308 over Halway Canal

PoorPosted for load

Assumption Parish, Louisiana · 4.3 M N of LA 70 · Structure no. 610404070804871

Built
1969
56 years old
Condition
Poor
inspected January 2024
Type
Slab
Concrete
Length
78 ft
4 main spans
Daily traffic
1,825
2021 count
Owner
State
State Highway Agency

About this bridge

LA0308 over Halway Canal is a concrete slab carrying LA0308 over Halway Canal in Assumption Parish, Louisiana. It was built in 1969, so it is 56 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 1,825 vehicles a day, roughly 11% of them trucks, projected to reach 2,007 by 2041. The structure is 78 ft (23.8 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLA0308
CrossesHalway Canal
Location4.3 M N of LA 70
RouteState Highway 308
Coordinates30.05407, -91.03582
Functional classUrban 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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating17.9 US tons
Inventory rating13.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span19 ft (5.8 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,825 (2021)
Projected traffic2,007 by 2041
Trucks11%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$400,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0308 over Halway Canal built?

It was built in 1969, making it 56 years old in 2025.

What condition is LA0308 over Halway 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 January 2024.

How much traffic does LA0308 over Halway Canal carry?

About 1,825 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0308 over Halway Canal?

The structure is 78 ft (23.8 m) long with a longest span of 19 ft (5.8 m) and a deck 29 ft wide.

Who owns LA0308 over Halway Canal?

It is owned by the State Highway Agency.