US Bridges

US0071 over Rocky Bayou

Good

Rapides Parish, Louisiana · 2.7 Mi. North of I-49 · Structure no. 084008404303061

Built
1997
28 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
10,090
2021 count
Owner
State
State Highway Agency

About this bridge

US0071 over Rocky Bayou is a concrete slab carrying US0071 over Rocky Bayou in Rapides Parish, Louisiana. It was built in 1997, so it is 28 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 10,090 vehicles a day, roughly 14% of them trucks, projected to reach 11,099 by 2041. The structure is 120 ft (36.6 m) long and 55 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesUS0071
CrossesRocky Bayou
Location2.7 Mi. North of I-49
RouteU.S. Route 71
Coordinates31.34151, -92.433
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span20 ft (6.1 m)
Deck width55 ft (16.7 m)
Roadway width52 ft (15.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,090 (2021)
Projected traffic11,099 by 2041
Trucks14%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

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 Rocky Bayou built?

It was built in 1997, making it 28 years old in 2025.

What condition is US0071 over Rocky 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 August 2024.

How much traffic does US0071 over Rocky Bayou carry?

About 10,090 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is US0071 over Rocky Bayou?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 55 ft wide.

Who owns US0071 over Rocky Bayou?

It is owned by the State Highway Agency.