US Bridges

County Road 51 over Big Branch Seb. Co.

Fair

Sebastian County, Arkansas · .2 E of SH 45 · Structure no. 000000000016803

Built
1939
86 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
44 ft
2 main spans
Daily traffic
1,500
2018 count
Owner
County
County Highway Agency

About this bridge

County Road 51 over Big Branch Seb. Co. is a concrete continuous slab carrying County Road 51 over Big Branch Seb. Co. in Sebastian County, Arkansas. It was built in 1939, so it is 86 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 6 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 1,500 vehicles a day, roughly 1% of them trucks, projected to reach 381 by 2007. The structure is 44 ft (13.4 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 51
CrossesBig Branch Seb. Co.
Location.2 E of SH 45
RouteCounty Highway 51
CountySebastian County
StateArkansas
Coordinates35.20361, -94.40867
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating35.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length44 ft (13.4 m)
Longest span22 ft (6.7 m)
Deck width21 ft (6.4 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2018)
Projected traffic381 by 2007
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$236,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 51 over Big Branch Seb. Co. built?

It was built in 1939, making it 86 years old in 2025.

What condition is County Road 51 over Big Branch 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 November 2024.

How much traffic does County Road 51 over Big Branch Seb. Co. carry?

About 1,500 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is County Road 51 over Big Branch Seb. Co.?

The structure is 44 ft (13.4 m) long with a longest span of 22 ft (6.7 m) and a deck 21 ft wide.

Who owns County Road 51 over Big Branch Seb. Co.?

It is owned by the County Highway Agency.