US Bridges

LA3064 over I-12

Fair

East Baton Rouge Parish, Louisiana · 0.6 MI N of I-10 · Structure no. 611702583201621

Built
1967
58 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
635 ft
12 main spans
Daily traffic
33,927
2021 count
Owner
State
State Highway Agency

About this bridge

LA3064 over I-12 is a steel stringer/multi-beam or girder carrying LA3064 over I-12 in East Baton Rouge Parish, Louisiana. It was built in 1967, so it is 58 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 33,927 vehicles a day, roughly 9% of them trucks, projected to reach 37,319 by 2041. The structure is 635 ft (193.5 m) long and 60 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesLA3064
CrossesI-12
Location0.6 MI N of I-10
RouteState Highway 3064
CountyEast Baton Rouge Parish
StateLouisiana
Coordinates30.41634, -91.09809
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans12
Design loadHS 20
Structure length635 ft (193.5 m)
Longest span70 ft (21.3 m)
Deck width60 ft (18.3 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,927 (2021)
Projected traffic37,319 by 2041
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

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 LA3064 over I-12 built?

It was built in 1967, making it 58 years old in 2025.

What condition is LA3064 over I-12 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 July 2023.

How much traffic does LA3064 over I-12 carry?

About 33,927 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is LA3064 over I-12?

The structure is 635 ft (193.5 m) long with a longest span of 70 ft (21.3 m) and a deck 60 ft wide.

Who owns LA3064 over I-12?

It is owned by the State Highway Agency.