US Bridges

Bluebonnet Blvd over Swamp/Bluebonnet

Fair

East Baton Rouge Parish, Louisiana · .6 MI N. of Burbank · Structure no. 611702583303011

Built
1978
47 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
101 ft
5 main spans
Daily traffic
15,539
2024 count
Owner
County
County Highway Agency

About this bridge

Bluebonnet Blvd over Swamp/Bluebonnet is a concrete slab carrying Bluebonnet Blvd over Swamp/Bluebonnet in East Baton Rouge Parish, Louisiana. It was built in 1978, so it is 47 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 15,539 vehicles a day, roughly 9% of them trucks, projected to reach 17,092 by 2044. The structure is 101 ft (30.8 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBluebonnet Blvd
CrossesSwamp/Bluebonnet
Location.6 MI N. of Burbank
RouteCounty Highway 0
CountyEast Baton Rouge Parish
StateLouisiana
Coordinates30.36244, -91.1054
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length101 ft (30.8 m)
Longest span20 ft (6.1 m)
Deck width34 ft (10.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,539 (2024)
Projected traffic17,092 by 2044
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$502,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Bluebonnet Blvd over Swamp/Bluebonnet built?

It was built in 1978, making it 47 years old in 2025.

What condition is Bluebonnet Blvd over Swamp/Bluebonnet 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 December 2024.

How much traffic does Bluebonnet Blvd over Swamp/Bluebonnet carry?

About 15,539 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Bluebonnet Blvd over Swamp/Bluebonnet?

The structure is 101 ft (30.8 m) long with a longest span of 20 ft (6.1 m) and a deck 34 ft wide.

Who owns Bluebonnet Blvd over Swamp/Bluebonnet?

It is owned by the County Highway Agency.