US Bridges

Jenius Rd. over Thornwell Canal

FairPosted for load

Jefferson Davis Parish, Louisiana · 0.6 MI N of LA 14 · Structure no. 072730045924541

Built
1978
47 years old, rebuilt 2011
Condition
Fair
inspected August 2024
Type
Channel Beam
Prestressed Concrete
Length
50 ft
2 main spans
Daily traffic
40
2019 count
Owner
County
County Highway Agency

About this bridge

Jenius Rd. over Thornwell Canal is a prestressed concrete channel beam carrying Jenius Rd. over Thornwell Canal in Jefferson Davis Parish, Louisiana. It was built in 1978 and reconstructed in 2011, 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 40 vehicles a day, projected to reach 44 by 2039. The structure is 50 ft (15.2 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesJenius Rd.
CrossesThornwell Canal
Location0.6 MI N of LA 14
RouteCounty Highway 0
CountyJefferson Davis Parish
StateLouisiana
Coordinates30.07527, -92.75776
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30.3 US tons
Inventory rating16.4 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span25 ft (7.6 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2019)
Projected traffic44 by 2039
Trucks—
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

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 Jenius Rd. over Thornwell Canal built?

It was built in 1978, making it 47 years old in 2025. It was reconstructed in 2011.

What condition is Jenius Rd. over Thornwell 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 August 2024.

How much traffic does Jenius Rd. over Thornwell Canal carry?

About 40 vehicles per day (2019 count).

How long is Jenius Rd. over Thornwell Canal?

The structure is 50 ft (15.2 m) long with a longest span of 25 ft (7.6 m) and a deck 25 ft wide.

Who owns Jenius Rd. over Thornwell Canal?

It is owned by the County Highway Agency.