US Bridges

LA1264 over On-Ramp to Seabrook Br.

Fair

Orleans Parish, Louisiana · .65 Mi. W. of Downman Rd. · Structure no. 023630019900215

Built
1975
50 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
866 ft
14 main spans
Daily traffic
13,713
2021 count
Owner
State
State Highway Agency

About this bridge

LA1264 over On-Ramp to Seabrook Br. is a steel stringer/multi-beam or girder carrying LA1264 over On-Ramp to Seabrook Br. in Orleans Parish, Louisiana. It was built in 1975, so it is 50 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 13,713 vehicles a day, roughly 11% of them trucks, projected to reach 15,084 by 2041. The structure is 866 ft (264 m) long and 25 ft wide.

Location

Open in Google Maps
CarriesLA1264
CrossesOn-Ramp to Seabrook Br.
Location.65 Mi. W. of Downman Rd.
RouteCounty Highway 1264
CountyOrleans Parish
StateLouisiana
Coordinates30.03108, -90.0398
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating33.2 US tons
Inventory rating25.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans14 (+9 approach)
Design loadHS 20
Structure length866 ft (264 m)
Longest span81 ft (24.7 m)
Deck width25 ft (7.7 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,713 (2021)
Projected traffic15,084 by 2041
Trucks11%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byOther Local 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 LA1264 over On-Ramp to Seabrook Br. built?

It was built in 1975, making it 50 years old in 2025.

What condition is LA1264 over On-Ramp to Seabrook Br. 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 March 2023.

How much traffic does LA1264 over On-Ramp to Seabrook Br. carry?

About 13,713 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA1264 over On-Ramp to Seabrook Br.?

The structure is 866 ft (264 m) long with a longest span of 81 ft (24.7 m) and a deck 25 ft wide.

Who owns LA1264 over On-Ramp to Seabrook Br.?

It is owned by the State Highway Agency and maintained by the Other Local Agency.