US Bridges

East Black Oak Rd. over Mason Creek-Washington

Good

Washington County, Arkansas · 6.57 M SE JCT SH 16 · Structure no. 000000000018316

Built
1967
58 years old
Condition
Good
inspected October 2024
Type
Channel Beam
Concrete
Length
62 ft
2 main spans
Daily traffic
1,400
2018 count
Owner
County
County Highway Agency

About this bridge

East Black Oak Rd. over Mason Creek-Washington is a concrete channel beam carrying East Black Oak Rd. over Mason Creek-Washington in Washington County, Arkansas. It was built in 1967, so it is 58 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 1,400 vehicles a day, roughly 1% of them trucks, projected to reach 186 by 2007. The structure is 62 ft (18.9 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesEast Black Oak Rd.
CrossesMason Creek-Washington
Location6.57 M SE JCT SH 16
RouteCounty Highway 57
Coordinates35.98187, -94.07684
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 inspectionOctober 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating29 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length62 ft (18.9 m)
Longest span31 ft (9.4 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2018)
Projected traffic186 by 2007
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 East Black Oak Rd. over Mason Creek-Washington built?

It was built in 1967, making it 58 years old in 2025.

What condition is East Black Oak Rd. over Mason Creek-Washington 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 October 2024.

How much traffic does East Black Oak Rd. over Mason Creek-Washington carry?

About 1,400 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is East Black Oak Rd. over Mason Creek-Washington?

The structure is 62 ft (18.9 m) long with a longest span of 31 ft (9.4 m) and a deck 26 ft wide.

Who owns East Black Oak Rd. over Mason Creek-Washington?

It is owned by the County Highway Agency.