US Bridges

Clark CR 477 Z-G over South Boat Ditch

FairPosted for load

Clark County, Arkansas · .8 MI N JCT SH 53 · Structure no. 000000000020243

Built
1987
38 years old
Condition
Fair
inspected August 2024
Type
Other
Steel Continuous
Length
89 ft
4 main spans
Daily traffic
175
2018 count
Owner
County
County Highway Agency

About this bridge

Clark CR 477 Z-G over South Boat Ditch is a steel continuous other carrying Clark CR 477 Z-G over South Boat Ditch in Clark County, Arkansas. It was built in 1987, so it is 38 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 175 vehicles a day, roughly 1% of them trucks, projected to reach 56 by 2007. The structure is 89 ft (27.1 m) long and 17 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesClark CR 477 Z-G
CrossesSouth Boat Ditch
Location.8 MI N JCT SH 53
RouteCounty Highway 477
CountyClark County
StateArkansas
Coordinates34.00279, -93.17587
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating18 US tons
Inventory rating11 US tons

Structure

Structure typeOther
MaterialSteel Continuous
DeckSteel plate
Main spans4
Design loadUnknown
Structure length89 ft (27.1 m)
Longest span69 ft (21 m)
Deck width17 ft (5.1 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2018)
Projected traffic56 by 2007
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$299,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Clark CR 477 Z-G over South Boat Ditch built?

It was built in 1987, making it 38 years old in 2025.

What condition is Clark CR 477 Z-G over South Boat 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 August 2024.

How much traffic does Clark CR 477 Z-G over South Boat Ditch carry?

About 175 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Clark CR 477 Z-G over South Boat Ditch?

The structure is 89 ft (27.1 m) long with a longest span of 69 ft (21 m) and a deck 17 ft wide.

Who owns Clark CR 477 Z-G over South Boat Ditch?

It is owned by the County Highway Agency.