US Bridges

LA3045 over Capitol Lake

Fair

East Baton Rouge Parish, Louisiana · 1.3 M N of I-10&I-110 · Structure no. 611708173500281

Built
1958
67 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
2,701
2021 count
Owner
State
State Highway Agency

About this bridge

LA3045 over Capitol Lake is a concrete slab carrying LA3045 over Capitol Lake in East Baton Rouge Parish, Louisiana. It was built in 1958, so it is 67 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 2,701 vehicles a day, roughly 11% of them trucks, projected to reach 2,971 by 2041. The structure is 80 ft (24.4 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA3045
CrossesCapitol Lake
Location1.3 M N of I-10&I-110
RouteState Highway 3045
CountyEast Baton Rouge Parish
StateLouisiana
Coordinates30.45806, -91.1818
Functional classUrban Collector

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.2 US tons
Inventory rating21.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width40 ft (12.3 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,701 (2021)
Projected traffic2,971 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 LA3045 over Capitol Lake built?

It was built in 1958, making it 67 years old in 2025.

What condition is LA3045 over Capitol Lake 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 2024.

How much traffic does LA3045 over Capitol Lake carry?

About 2,701 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA3045 over Capitol Lake?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 40 ft wide.

Who owns LA3045 over Capitol Lake?

It is owned by the State Highway Agency.