US Bridges

Hamilton Log 7.37 over Buffalo Ditch

Fair

Lonoke County, Arkansas · .6 MI E HWY 13 · Structure no. 000000000004348

Built
1978
47 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
120 ft
3 main spans
Daily traffic
170
2018 count
Owner
County
County Highway Agency

About this bridge

Hamilton Log 7.37 over Buffalo Ditch is a concrete slab carrying Hamilton Log 7.37 over Buffalo Ditch in Lonoke County, Arkansas. It was built in 1978, so it is 47 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 170 vehicles a day, roughly 7% of them trucks, projected to reach 55 by 2007. The structure is 120 ft (36.6 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesHamilton Log 7.37
CrossesBuffalo Ditch
Location.6 MI E HWY 13
RouteCounty Highway 23
CountyLonoke County
StateArkansas
Coordinates34.60174, -91.74432
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.
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 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 alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length120 ft (36.6 m)
Longest span40 ft (12.2 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2018)
Projected traffic55 by 2007
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hamilton Log 7.37 over Buffalo Ditch built?

It was built in 1978, making it 47 years old in 2025.

What condition is Hamilton Log 7.37 over Buffalo Ditch 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 Hamilton Log 7.37 over Buffalo Ditch carry?

About 170 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is Hamilton Log 7.37 over Buffalo Ditch?

The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 29 ft wide.

Who owns Hamilton Log 7.37 over Buffalo Ditch?

It is owned by the County Highway Agency.