US Bridges

Magnolia Loop over Routh Creek

Good

La Salle Parish, Louisiana · 0.9 MI SE of LA 776 · Structure no. 583031307921151

Built
2005
20 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
73
2022 count
Owner
County
County Highway Agency

About this bridge

Magnolia Loop over Routh Creek is a concrete culvert carrying Magnolia Loop over Routh Creek in La Salle 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 73 vehicles a day, projected to reach 80 by 2042. The structure is 21 ft (6.4 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMagnolia Loop
CrossesRouth Creek
Location0.9 MI SE of LA 776
RouteCounty Highway 0
Coordinates31.51148, -92.19066
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30.3 US tons
Inventory rating23.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width58 ft (17.6 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73 (2022)
Projected traffic80 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Magnolia Loop over Routh Creek built?

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

What condition is Magnolia Loop over Routh 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 June 2023.

How much traffic does Magnolia Loop over Routh Creek carry?

About 73 vehicles per day (2022 count).

How long is Magnolia Loop over Routh Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 58 ft wide.

Who owns Magnolia Loop over Routh Creek?

It is owned by the County Highway Agency.