US Bridges

State Highway 378 over Rock Creek

Fair

Scott County, Arkansas · 0.95 MI E Sebastian CO Li · Structure no. 0000000000M3291

Built
1971
54 years old
Condition
Fair
inspected January 2025
Type
Channel Beam
Concrete
Length
124 ft
4 main spans
Daily traffic
298
2018 count
Owner
State
State Highway Agency

About this bridge

State Highway 378 over Rock Creek is a concrete channel beam carrying State Highway 378 over Rock Creek in Scott County, Arkansas. It was built in 1971, so it is 54 years old, older than the Arkansas average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 298 vehicles a day, roughly 1% of them trucks, projected to reach 403 by 2028. The structure is 124 ft (37.8 m) long and 28 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesState Highway 378
CrossesRock Creek
Location0.95 MI E Sebastian CO Li
RouteState Highway 378
CountyScott County
StateArkansas
Coordinates35.01653, -94.21428
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadH 15
Structure length124 ft (37.8 m)
Longest span31 ft (9.4 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic298 (2018)
Projected traffic403 by 2028
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Highway 378 over Rock Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is State Highway 378 over Rock Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.

How much traffic does State Highway 378 over Rock Creek carry?

About 298 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is State Highway 378 over Rock Creek?

The structure is 124 ft (37.8 m) long with a longest span of 31 ft (9.4 m) and a deck 28 ft wide.

Who owns State Highway 378 over Rock Creek?

It is owned by the State Highway Agency.