US Bridges

LA0623 over Flagon Bayou

Good

Rapides Parish, Louisiana · 0.6 M E of US 165 · Structure no. 084000000080670

Built
2019
6 years old
Condition
Good
inspected December 2024
Type
Slab
Concrete
Length
220 ft
11 main spans
Daily traffic
1,951
2021 count
Owner
State
State Highway Agency

About this bridge

LA0623 over Flagon Bayou is a concrete slab carrying LA0623 over Flagon Bayou in Rapides Parish, Louisiana. It was built in 2019, so it is 6 years old, younger 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 1,951 vehicles a day, roughly 4% of them trucks, projected to reach 2,146 by 2041. The structure is 220 ft (67.1 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLA0623
CrossesFlagon Bayou
Location0.6 M E of US 165
RouteState Highway 623
Coordinates31.39179, -92.4009
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.
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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65.4 US tons
Inventory rating50.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans11
Design loadGreater than HL 93
Structure length220 ft (67.1 m)
Longest span20 ft (6.1 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,951 (2021)
Projected traffic2,146 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 LA0623 over Flagon Bayou built?

It was built in 2019, making it 6 years old in 2025.

What condition is LA0623 over Flagon Bayou 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 December 2024.

How much traffic does LA0623 over Flagon Bayou carry?

About 1,951 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is LA0623 over Flagon Bayou?

The structure is 220 ft (67.1 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns LA0623 over Flagon Bayou?

It is owned by the State Highway Agency.