US Bridges

Russ RD over Isle Marrone Canal

PoorPosted for load

Vermilion Parish, Louisiana · 1.75 Mi. W of LA 35 · Structure no. 035729546921851

Built
1978
47 years old
Condition
Poor
inspected July 2023
Type
Channel Beam
Prestressed Concrete
Length
53 ft
1 main span
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

Russ RD over Isle Marrone Canal is a prestressed concrete channel beam carrying Russ RD over Isle Marrone Canal in Vermilion Parish, Louisiana. It was built in 1978, 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 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 30 vehicles a day, projected to reach 33 by 2042. The structure is 53 ft (16.2 m) long and 22 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesRuss RD
CrossesIsle Marrone Canal
Location1.75 Mi. W of LA 35
RouteCounty Highway 0
CountyVermilion Parish
StateLouisiana
Coordinates29.91063, -92.30928
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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
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 evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating14.3 US tons
Inventory rating11 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length53 ft (16.2 m)
Longest span20 ft (6.1 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2022)
Projected traffic33 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Russ RD over Isle Marrone Canal built?

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

What condition is Russ RD over Isle Marrone 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 Russ RD over Isle Marrone Canal carry?

About 30 vehicles per day (2022 count).

How long is Russ RD over Isle Marrone Canal?

The structure is 53 ft (16.2 m) long with a longest span of 20 ft (6.1 m) and a deck 22 ft wide.

Who owns Russ RD over Isle Marrone Canal?

It is owned by the County Highway Agency.