US Bridges

Semmes RD over Hebert Canal

FairPosted for load

Vermilion Parish, Louisiana · 1.45 MI SW of LA 82 · Structure no. 035729497921201

Built
1978
47 years old, rebuilt 2016
Condition
Fair
inspected July 2023
Type
Channel Beam
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

Semmes RD over Hebert Canal is a prestressed concrete channel beam carrying Semmes RD over Hebert Canal in Vermilion Parish, Louisiana. It was built in 1978 and reconstructed in 2016, so it is 47 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 55 by 2042. The structure is 55 ft (16.8 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSemmes RD
CrossesHebert Canal
Location1.45 MI SW of LA 82
RouteCounty Highway 0
CountyVermilion Parish
StateLouisiana
Coordinates29.82869, -92.20248
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
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 alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating26.5 US tons
Inventory rating13.9 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.4 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic55 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$211,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Semmes RD over Hebert Canal built?

It was built in 1978, making it 47 years old in 2025. It was reconstructed in 2016.

What condition is Semmes RD over Hebert 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 2023.

How much traffic does Semmes RD over Hebert Canal carry?

About 50 vehicles per day (2022 count).

How long is Semmes RD over Hebert Canal?

The structure is 55 ft (16.8 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns Semmes RD over Hebert Canal?

It is owned by the County Highway Agency.