US Bridges

LA1111 over I-10

Good

Acadia Parish, Louisiana · 0.5 Mi. N. of US 90 · Structure no. 030108013001531

Built
1964
61 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
315 ft
6 main spans
Daily traffic
11,565
2021 count
Owner
State
State Highway Agency

About this bridge

LA1111 over I-10 is a steel stringer/multi-beam or girder carrying LA1111 over I-10 in Acadia Parish, Louisiana. It was built in 1964, so it is 61 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11,565 vehicles a day, roughly 9% of them trucks, projected to reach 12,721 by 2041. The structure is 315 ft (96 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLA1111
CrossesI-10
Location0.5 Mi. N. of US 90
RouteState Highway 1111
CountyAcadia Parish
StateLouisiana
Coordinates30.23505, -92.36255
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length315 ft (96 m)
Longest span70 ft (21.3 m)
Deck width34 ft (10.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,565 (2021)
Projected traffic12,721 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 LA1111 over I-10 built?

It was built in 1964, making it 61 years old in 2025.

What condition is LA1111 over I-10 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does LA1111 over I-10 carry?

About 11,565 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is LA1111 over I-10?

The structure is 315 ft (96 m) long with a longest span of 70 ft (21.3 m) and a deck 34 ft wide.

Who owns LA1111 over I-10?

It is owned by the State Highway Agency.