US Bridges

Flagon Creek RD over Flagon Bayou

Good

Grant Parish, Louisiana · 0.43 M. E. of JCT US 167 · Structure no. 082231262922871

Built
1986
39 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
52 ft
6 main spans
Daily traffic
53
2022 count
Owner
County
County Highway Agency

About this bridge

Flagon Creek RD over Flagon Bayou is a concrete culvert carrying Flagon Creek RD over Flagon Bayou in Grant Parish, Louisiana. It was built in 1986, so it is 39 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 53 vehicles a day, projected to reach 58 by 2042. The structure is 52 ft (15.8 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFlagon Creek RD
CrossesFlagon Bayou
Location0.43 M. E. of JCT US 167
RouteCounty Highway 0
Coordinates31.43703, -92.4789
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans6
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span8 ft (2.4 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53 (2022)
Projected traffic58 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Flagon Creek RD over Flagon Bayou built?

It was built in 1986, making it 39 years old in 2025.

What condition is Flagon Creek RD 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 April 2023.

How much traffic does Flagon Creek RD over Flagon Bayou carry?

About 53 vehicles per day (2022 count).

How long is Flagon Creek RD over Flagon Bayou?

The structure is 52 ft (15.8 m) long with a longest span of 8 ft (2.4 m) and a deck 30 ft wide.

Who owns Flagon Creek RD over Flagon Bayou?

It is owned by the County Highway Agency.