US Bridges

I0010 over US 51 & Swamps

Fair

St. John the Baptist Parish, Louisiana · I0010 · Structure no. 624804501312071

Built
1972
53 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
11,753 ft
176 main spans
Daily traffic
48,723
2021 count
Owner
State
State Highway Agency

About this bridge

I0010 over US 51 & Swamps is a prestressed concrete stringer/multi-beam or girder carrying I0010 over US 51 & Swamps in St. John the Baptist Parish, Louisiana. It was built in 1972, so it is 53 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 48,723 vehicles a day, roughly 26% of them trucks, projected to reach 53,595 by 2041. The structure is 11,753 ft (3,582.3 m) long and 44 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesI0010
CrossesUS 51 & Swamps
LocationI0010
RouteInterstate 10
CountySt. John the Baptist Parish
StateLouisiana
Coordinates30.08945, -90.4454
Functional classUrban 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.
Superstructure8 Very GoodNo problems noted.
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans176 (+10 approach)
Design loadHS 20
Structure length11,753 ft (3,582.3 m)
Longest span83 ft (25.3 m)
Deck width44 ft (13.4 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,723 (2021)
Projected traffic53,595 by 2041
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed98.8 mi (159 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I0010 over US 51 & Swamps built?

It was built in 1972, making it 53 years old in 2025.

What condition is I0010 over US 51 & Swamps 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 US 51 & Swamps carry?

About 48,723 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is I0010 over US 51 & Swamps?

The structure is 11,753 ft (3,582.3 m) long with a longest span of 83 ft (25.3 m) and a deck 44 ft wide.

Who owns I0010 over US 51 & Swamps?

It is owned by the State Highway Agency.