US Bridges

County Road 46 over Mackenay Creek Seb. Co.

Fair

Sebastian County, Arkansas · 0.3MI W of SH 253 · Structure no. 000000000018890

Built
1940
85 years old, rebuilt 1963
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
25 ft
2 main spans
Daily traffic
705
2018 count
Owner
County
County Highway Agency

About this bridge

County Road 46 over Mackenay Creek Seb. Co. is a steel continuous stringer/multi-beam or girder carrying County Road 46 over Mackenay Creek Seb. Co. in Sebastian County, Arkansas. It was built in 1940 and reconstructed in 1963, so it is 85 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 705 vehicles a day, roughly 1% of them trucks, projected to reach 207 by 2007. The structure is 25 ft (7.6 m) long and 21 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Road 46
CrossesMackenay Creek Seb. Co.
Location0.3MI W of SH 253
RouteCounty Highway 46
CountySebastian County
StateArkansas
Coordinates35.16218, -94.34427
Functional classRural Local

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.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating35.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length25 ft (7.6 m)
Longest span13 ft (4 m)
Deck width21 ft (6.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic705 (2018)
Projected traffic207 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 County Road 46 over Mackenay Creek Seb. Co. built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1963.

What condition is County Road 46 over Mackenay Creek Seb. Co. 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 County Road 46 over Mackenay Creek Seb. Co. carry?

About 705 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is County Road 46 over Mackenay Creek Seb. Co.?

The structure is 25 ft (7.6 m) long with a longest span of 13 ft (4 m) and a deck 21 ft wide.

Who owns County Road 46 over Mackenay Creek Seb. Co.?

It is owned by the County Highway Agency.