US Bridges

I0010 over Reserve Relief Canal

Fair

St. John the Baptist Parish, Louisiana · I 10 · Structure no. 624804501305151

Built
1974
51 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
18,731 ft
263 main spans
Daily traffic
44,074
2021 count
Owner
State
State Highway Agency

About this bridge

I0010 over Reserve Relief Canal is a prestressed concrete stringer/multi-beam or girder carrying I0010 over Reserve Relief Canal in St. John the Baptist Parish, Louisiana. It was built in 1974, so it is 51 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.

It carries about 44,074 vehicles a day, roughly 25% of them trucks, projected to reach 48,481 by 2041. The structure is 18,731 ft (5,709.2 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI0010
CrossesReserve Relief Canal
LocationI 10
RouteInterstate 10
CountySt. John the Baptist Parish
StateLouisiana
Coordinates30.11266, -90.56422
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans263 (+13 approach)
Design loadHS 20
Structure length18,731 ft (5,709.2 m)
Longest span85 ft (25.9 m)
Deck width40 ft (12.2 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,074 (2021)
Projected traffic48,481 by 2041
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I0010 over Reserve Relief Canal built?

It was built in 1974, making it 51 years old in 2025.

What condition is I0010 over Reserve Relief 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 June 2023.

How much traffic does I0010 over Reserve Relief Canal carry?

About 44,074 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is I0010 over Reserve Relief Canal?

The structure is 18,731 ft (5,709.2 m) long with a longest span of 85 ft (25.9 m) and a deck 40 ft wide.

Who owns I0010 over Reserve Relief Canal?

It is owned by the State Highway Agency.