US Bridges

LA1064 over I-55

Good

Tangipahoa Parish, Louisiana · LA1064 · Structure no. 625308530803741

Built
1970
55 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
222 ft
4 main spans
Daily traffic
2,854
2021 count
Owner
State
State Highway Agency

About this bridge

LA1064 over I-55 is a prestressed concrete stringer/multi-beam or girder carrying LA1064 over I-55 in Tangipahoa Parish, Louisiana. It was built in 1970, so it is 55 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 2,854 vehicles a day, roughly 9% of them trucks, projected to reach 3,139 by 2041. The structure is 222 ft (67.7 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLA1064
CrossesI-55
LocationLA1064
RouteState Highway 1064
Coordinates30.54472, -90.5043
Functional classUrban Collector

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 inspectionJanuary 2025
Inspection intervalevery 48 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 rating92 US tons
Inventory rating47 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length222 ft (67.7 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 traffic2,854 (2021)
Projected traffic3,139 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was LA1064 over I-55 built?

It was built in 1970, making it 55 years old in 2025.

What condition is LA1064 over I-55 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 January 2025.

How much traffic does LA1064 over I-55 carry?

About 2,854 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is LA1064 over I-55?

The structure is 222 ft (67.7 m) long with a longest span of 70 ft (21.3 m) and a deck 34 ft wide.

Who owns LA1064 over I-55?

It is owned by the State Highway Agency.