US Bridges

US0165 over Flagon Bayou Relief

Good

Rapides Parish, Louisiana · 0.44 Mi. North of LA 623 · Structure no. 084000150202092

Built
1984
41 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete
Length
140 ft
7 main spans
Daily traffic
20,902
2021 count
Owner
State
State Highway Agency

About this bridge

US0165 over Flagon Bayou Relief is a concrete slab carrying US0165 over Flagon Bayou Relief in Rapides Parish, Louisiana. It was built in 1984, so it is 41 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 20,902 vehicles a day, roughly 14% of them trucks, projected to reach 22,992 by 2041. The structure is 140 ft (42.7 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS0165
CrossesFlagon Bayou Relief
Location0.44 Mi. North of LA 623
RouteU.S. Route 165
Coordinates31.39564, -92.4096
Functional classUrban Other Principal Arterial

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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span20 ft (6.1 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,902 (2021)
Projected traffic22,992 by 2041
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 US0165 over Flagon Bayou Relief built?

It was built in 1984, making it 41 years old in 2025.

What condition is US0165 over Flagon Bayou Relief 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 June 2024.

How much traffic does US0165 over Flagon Bayou Relief carry?

About 20,902 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is US0165 over Flagon Bayou Relief?

The structure is 140 ft (42.7 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns US0165 over Flagon Bayou Relief?

It is owned by the State Highway Agency.