US Bridges

George Mashon RD over Little Natalbany River

Good

Livingston Parish, Louisiana · 1.24 Mi. S. of LA 40 · Structure no. 623200000000031

Built
2020
5 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete
Length
125 ft
5 main spans
Daily traffic
127
2019 count
Owner
County
County Highway Agency

About this bridge

George Mashon RD over Little Natalbany River is a concrete slab carrying George Mashon RD over Little Natalbany River in Livingston Parish, Louisiana. It was built in 2020, so it is 5 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 127 vehicles a day, projected to reach 139 by 2039. The structure is 125 ft (38.1 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesGeorge Mashon RD
CrossesLittle Natalbany River
Location1.24 Mi. S. of LA 40
RouteCounty Highway 0
Coordinates30.6296, -90.57698
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 alignment7: Better than present minimum criteria
Operating rating69.7 US tons
Inventory rating53.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length125 ft (38.1 m)
Longest span25 ft (7.6 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic127 (2019)
Projected traffic139 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 George Mashon RD over Little Natalbany River built?

It was built in 2020, making it 5 years old in 2025.

What condition is George Mashon RD over Little Natalbany River 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 September 2024.

How much traffic does George Mashon RD over Little Natalbany River carry?

About 127 vehicles per day (2019 count).

How long is George Mashon RD over Little Natalbany River?

The structure is 125 ft (38.1 m) long with a longest span of 25 ft (7.6 m) and a deck 26 ft wide.

Who owns George Mashon RD over Little Natalbany River?

It is owned by the County Highway Agency.