US Bridges

Marsh RD over Hebert Canal

PoorPosted for load

Vermilion Parish, Louisiana · 1.1 MI W. of Prarie RD · Structure no. 035729547921231

Built
1973
52 years old
Condition
Poor
inspected July 2023
Type
Channel Beam
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
25
2022 count
Owner
County
County Highway Agency

About this bridge

Marsh RD over Hebert Canal is a prestressed concrete channel beam carrying Marsh RD over Hebert Canal in Vermilion Parish, Louisiana. It was built in 1973, so it is 52 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 4 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 25 vehicles a day, projected to reach 27 by 2042. The structure is 30 ft (9.1 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesMarsh RD
CrossesHebert Canal
Location1.1 MI W. of Prarie RD
RouteCounty Highway 0
CountyVermilion Parish
StateLouisiana
Coordinates29.91167, -92.205
Functional classRural Local

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating22.2 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2022)
Projected traffic27 by 2042
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 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 Marsh RD over Hebert Canal built?

It was built in 1973, making it 52 years old in 2025.

What condition is Marsh RD over Hebert 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 July 2023.

How much traffic does Marsh RD over Hebert Canal carry?

About 25 vehicles per day (2022 count).

How long is Marsh RD over Hebert Canal?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 25 ft wide.

Who owns Marsh RD over Hebert Canal?

It is owned by the County Highway Agency.