US Bridges

US0071 over Kelly Bayou

Good

Caddo Parish, Louisiana · 2.4 MI N of Jct. LA 170 · Structure no. 040900110402451

Built
2001
24 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
236 ft
5 main spans
Daily traffic
583
2021 count
Owner
State
State Highway Agency

About this bridge

US0071 over Kelly Bayou is a prestressed concrete continuous stringer/multi-beam or girder carrying US0071 over Kelly Bayou in Caddo Parish, Louisiana. It was built in 2001, so it is 24 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 583 vehicles a day, roughly 26% of them trucks, projected to reach 641 by 2041. The structure is 236 ft (71.9 m) long and 46 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesUS0071
CrossesKelly Bayou
Location2.4 MI N of Jct. LA 170
RouteU.S. Route 71
Coordinates32.85753, -93.8694
Functional classRural Minor 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 protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating48 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length236 ft (71.9 m)
Longest span47 ft (14.3 m)
Deck width46 ft (14 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic583 (2021)
Projected traffic641 by 2041
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US0071 over Kelly Bayou built?

It was built in 2001, making it 24 years old in 2025.

What condition is US0071 over Kelly 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 January 2025.

How much traffic does US0071 over Kelly Bayou carry?

About 583 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is US0071 over Kelly Bayou?

The structure is 236 ft (71.9 m) long with a longest span of 47 ft (14.3 m) and a deck 46 ft wide.

Who owns US0071 over Kelly Bayou?

It is owned by the State Highway Agency.