US Bridges

SH 66/STONE County over S. Sylamore

Fair

Stone County, Arkansas · .46 MI E of Newnata · Structure no. 000000000000892

Built
1956
69 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
224 ft
8 main spans
Daily traffic
2,300
2018 count
Owner
State
State Highway Agency

About this bridge

SH 66/STONE County over S. Sylamore is a concrete slab carrying SH 66/STONE County over S. Sylamore in Stone County, Arkansas. It was built in 1956, so it is 69 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 2,300 vehicles a day, roughly 1% of them trucks, projected to reach 5,698 by 2028. The structure is 224 ft (68.3 m) long and 28 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesSH 66/STONE County
CrossesS. Sylamore
Location.46 MI E of Newnata
RouteState Highway 66
CountyStone County
StateArkansas
Coordinates35.88643, -92.23982
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadH 15
Structure length224 ft (68.3 m)
Longest span28 ft (8.5 m)
Deck width28 ft (8.4 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2018)
Projected traffic5,698 by 2028
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$585,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 66/STONE County over S. Sylamore built?

It was built in 1956, making it 69 years old in 2025.

What condition is SH 66/STONE County over S. Sylamore 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 October 2024.

How much traffic does SH 66/STONE County over S. Sylamore carry?

About 2,300 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is SH 66/STONE County over S. Sylamore?

The structure is 224 ft (68.3 m) long with a longest span of 28 ft (8.5 m) and a deck 28 ft wide.

Who owns SH 66/STONE County over S. Sylamore?

It is owned by the State Highway Agency.