US Bridges

SH 359 over Flat Rock Creek

Good

Johnson County, Arkansas · 1.3M N JCT US 64 & 359 · Structure no. 0000000000M3131

Built
1968
57 years old
Condition
Good
inspected June 2024
Type
Channel Beam
Concrete
Length
93 ft
3 main spans
Daily traffic
810
2018 count
Owner
State
State Highway Agency

About this bridge

SH 359 over Flat Rock Creek is a concrete channel beam carrying SH 359 over Flat Rock Creek in Johnson County, Arkansas. It was built in 1968, so it is 57 years old, older than the Arkansas average of 45.1 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 810 vehicles a day, roughly 1% of them trucks, projected to reach 1,605 by 2028. The structure is 93 ft (28.3 m) long and 28 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesSH 359
CrossesFlat Rock Creek
Location1.3M N JCT US 64 & 359
RouteState Highway 359
Coordinates35.35868, -93.31611
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length93 ft (28.3 m)
Longest span31 ft (9.4 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic810 (2018)
Projected traffic1,605 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 SH 359 over Flat Rock Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is SH 359 over Flat Rock 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 2024.

How much traffic does SH 359 over Flat Rock Creek carry?

About 810 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is SH 359 over Flat Rock Creek?

The structure is 93 ft (28.3 m) long with a longest span of 31 ft (9.4 m) and a deck 28 ft wide.

Who owns SH 359 over Flat Rock Creek?

It is owned by the State Highway Agency.