US Bridges

SH 4-17 Lm 4.34 over Canal No. 18

Fair

Desha County, Arkansas · 4.34 MI E US 65-MCGEHEE · Structure no. 000000000003799

Built
1964
61 years old
Condition
Fair
inspected March 2023
Type
Channel Beam
Concrete
Length
149 ft
7 main spans
Daily traffic
900
2018 count
Owner
State
State Highway Agency

About this bridge

SH 4-17 Lm 4.34 over Canal No. 18 is a concrete channel beam carrying SH 4-17 Lm 4.34 over Canal No. 18 in Desha County, Arkansas. It was built in 1964, so it is 61 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 900 vehicles a day, roughly 9% of them trucks, projected to reach 1,700 by 2036. The structure is 149 ft (45.4 m) long and 25 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesSH 4-17 Lm 4.34
CrossesCanal No. 18
Location4.34 MI E US 65-MCGEHEE
RouteState Highway 4
CountyDesha County
StateArkansas
Coordinates33.60604, -91.3143
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans7
Design loadH 15
Structure length149 ft (45.4 m)
Longest span31 ft (9.4 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2018)
Projected traffic1,700 by 2036
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 4-17 Lm 4.34 over Canal No. 18 built?

It was built in 1964, making it 61 years old in 2025.

What condition is SH 4-17 Lm 4.34 over Canal No. 18 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 March 2023.

How much traffic does SH 4-17 Lm 4.34 over Canal No. 18 carry?

About 900 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is SH 4-17 Lm 4.34 over Canal No. 18?

The structure is 149 ft (45.4 m) long with a longest span of 31 ft (9.4 m) and a deck 25 ft wide.

Who owns SH 4-17 Lm 4.34 over Canal No. 18?

It is owned by the State Highway Agency.