US Bridges

I0010 over Ramp B. Off Ramp

Poor

St. Martin Parish, Louisiana · 5.66 MI W of LA 975 · Structure no. 035004500614298

Built
1971
54 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
253 ft
4 main spans
Daily traffic
970
2021 count
Owner
State
State Highway Agency

About this bridge

I0010 over Ramp B. Off Ramp is a prestressed concrete stringer/multi-beam or girder carrying I0010 over Ramp B. Off Ramp in St. Martin Parish, Louisiana. It was built in 1971, so it is 54 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 3 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.

It carries about 970 vehicles a day, roughly 22% of them trucks, projected to reach 1,067 by 2041. The structure is 253 ft (77.1 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI0010
CrossesRamp B. Off Ramp
Location5.66 MI W of LA 975
RouteInterstate 10
CountySt. Martin Parish
StateLouisiana
Coordinates30.34258, -91.72262
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating31.7 US tons
Inventory rating16.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length253 ft (77.1 m)
Longest span64 ft (19.5 m)
Deck width24 ft (7.3 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic970 (2021)
Projected traffic1,067 by 2041
Trucks22%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I0010 over Ramp B. Off Ramp built?

It was built in 1971, making it 54 years old in 2025.

What condition is I0010 over Ramp B. Off Ramp 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 August 2024.

How much traffic does I0010 over Ramp B. Off Ramp carry?

About 970 vehicles per day (2021 count), of which roughly 22% are trucks.

How long is I0010 over Ramp B. Off Ramp?

The structure is 253 ft (77.1 m) long with a longest span of 64 ft (19.5 m) and a deck 24 ft wide.

Who owns I0010 over Ramp B. Off Ramp?

It is owned by the State Highway Agency.