US Bridges

Graybow Road over Palmetto Creek

Good

Beauregard Parish, Louisiana · 1.1 MI East of LA 3099 · Structure no. 070600000070602

Built
2023
2 years old
Condition
Good
inspected November 2023
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
1,025
2022 count
Owner
County
County Highway Agency

About this bridge

Graybow Road over Palmetto Creek is a concrete slab carrying Graybow Road over Palmetto Creek in Beauregard Parish, Louisiana. It was built in 2023, so it is 2 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 1,025 vehicles a day, roughly 14% of them trucks, projected to reach 1,127 by 2042. The structure is 80 ft (24.4 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesGraybow Road
CrossesPalmetto Creek
Location1.1 MI East of LA 3099
RouteCounty Highway 0
Coordinates30.82895, -93.30628
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating48.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadGreater than HL 93
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,025 (2022)
Projected traffic1,127 by 2042
Trucks14%
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 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 Graybow Road over Palmetto Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is Graybow Road over Palmetto 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 November 2023.

How much traffic does Graybow Road over Palmetto Creek carry?

About 1,025 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Graybow Road over Palmetto Creek?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns Graybow Road over Palmetto Creek?

It is owned by the County Highway Agency.