US Bridges

I0310 over Icg.Rr Ramp E F &h LA4

Fair

St. Charles Parish, Louisiana · 5.14 MI S I-10 I-310 JCT · Structure no. 024504503606221

Built
1983
42 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
5,145 ft
5 main spans
Daily traffic
47,396
2021 count
Owner
State
State Highway Agency

About this bridge

I0310 over Icg.Rr Ramp E F &h LA4 is a steel continuous stringer/multi-beam or girder carrying I0310 over Icg.Rr Ramp E F &h LA4 in St. Charles Parish, Louisiana. It was built in 1983, so it is 42 years old, younger 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 47,396 vehicles a day, roughly 25% of them trucks, projected to reach 52,135 by 2041. The structure is 5,145 ft (1,568.2 m) long and 82 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesI0310
CrossesIcg.Rr Ramp E F &h LA4
Location5.14 MI S I-10 I-310 JCT
RouteInterstate 310
CountySt. Charles Parish
StateLouisiana
Coordinates29.95613, -90.3662
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating13.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5 (+43 approach)
Design loadHS 20
Structure length5,145 ft (1,568.2 m)
Longest span266 ft (81.1 m)
Deck width82 ft (25 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47,396 (2021)
Projected traffic52,135 by 2041
Trucks25%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed16.2 mi (26 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 I0310 over Icg.Rr Ramp E F &h LA4 built?

It was built in 1983, making it 42 years old in 2025.

What condition is I0310 over Icg.Rr Ramp E F &h LA4 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 October 2023.

How much traffic does I0310 over Icg.Rr Ramp E F &h LA4 carry?

About 47,396 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is I0310 over Icg.Rr Ramp E F &h LA4?

The structure is 5,145 ft (1,568.2 m) long with a longest span of 266 ft (81.1 m) and a deck 82 ft wide.

Who owns I0310 over Icg.Rr Ramp E F &h LA4?

It is owned by the State Highway Agency.