US Bridges

Air Base RD over Flagon Creek

Good

Grant Parish, Louisiana · .29 Mile East of US 167 · Structure no. 082200000080586

Built
2005
20 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
138
2023 count
Owner
County
County Highway Agency

About this bridge

Air Base RD over Flagon Creek is a concrete culvert carrying Air Base RD over Flagon Creek in Grant Parish, Louisiana. It was built in 2005, so it is 20 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 138 vehicles a day, roughly 10% of them trucks, projected to reach 151 by 2043. The structure is 32 ft (9.8 m) long and 56 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesAir Base RD
CrossesFlagon Creek
Location.29 Mile East of US 167
RouteCounty Highway 0
Coordinates31.47226, -92.4869
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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span9 ft (2.7 m)
Deck width56 ft (17.1 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic138 (2023)
Projected traffic151 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Air Base RD over Flagon Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Air Base RD over Flagon Creek 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 Air Base RD over Flagon Creek carry?

About 138 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Air Base RD over Flagon Creek?

The structure is 32 ft (9.8 m) long with a longest span of 9 ft (2.7 m) and a deck 56 ft wide.

Who owns Air Base RD over Flagon Creek?

It is owned by the County Highway Agency.