US Bridges

Rock Hill Road over Grays Creek

Good

Grant Parish, Louisiana · 5.72 MI N of JCT US 71 · Structure no. 082200000080676

Built
2017
8 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
130
2023 count
Owner
County
County Highway Agency

About this bridge

Rock Hill Road over Grays Creek is a concrete slab carrying Rock Hill Road over Grays Creek in Grant Parish, Louisiana. It was built in 2017, so it is 8 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 130 vehicles a day, roughly 1% of them trucks, projected to reach 143 by 2043. The structure is 80 ft (24.4 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesRock Hill Road
CrossesGrays Creek
Location5.72 MI N of JCT US 71
RouteCounty Highway 0
Coordinates31.49658, -92.5199
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 protection8 Very GoodNo problems noted.
Last inspectionMarch 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 rating66 US tons
Inventory rating50.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHL 93
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width27 ft (8.2 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2023)
Projected traffic143 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Rock Hill Road over Grays Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Rock Hill Road over Grays 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 March 2023.

How much traffic does Rock Hill Road over Grays Creek carry?

About 130 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Rock Hill Road over Grays Creek?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 27 ft wide.

Who owns Rock Hill Road over Grays Creek?

It is owned by the County Highway Agency.