US Bridges

US 79B-09 Lm 14.12 over Plum Bayou

FairPosted for load

Jefferson County, Arkansas · 2.7 MI E US 63-ALTHEMIER · Structure no. 000000000002830

Built
1952
73 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
225 ft
9 main spans
Daily traffic
1,826
2018 count
Owner
State
State Highway Agency

About this bridge

US 79B-09 Lm 14.12 over Plum Bayou is a concrete slab carrying US 79B-09 Lm 14.12 over Plum Bayou in Jefferson County, Arkansas. It was built in 1952, so it is 73 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. Its operating status is: posted for load restriction.

It carries about 1,826 vehicles a day, roughly 1% of them trucks, projected to reach 2,153 by 2028. The structure is 225 ft (68.6 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesUS 79B-09 Lm 14.12
CrossesPlum Bayou
Location2.7 MI E US 63-ALTHEMIER
RouteU.S. Route 79
CountyJefferson County
StateArkansas
Coordinates34.31255, -91.9202
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 rating47 US tons
Inventory rating28 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans9
Design loadH 20
Structure length225 ft (68.6 m)
Longest span25 ft (7.6 m)
Deck width31 ft (9.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,826 (2018)
Projected traffic2,153 by 2028
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$830,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 79B-09 Lm 14.12 over Plum Bayou built?

It was built in 1952, making it 73 years old in 2025.

What condition is US 79B-09 Lm 14.12 over Plum Bayou 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 May 2023.

How much traffic does US 79B-09 Lm 14.12 over Plum Bayou carry?

About 1,826 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is US 79B-09 Lm 14.12 over Plum Bayou?

The structure is 225 ft (68.6 m) long with a longest span of 25 ft (7.6 m) and a deck 31 ft wide.

Who owns US 79B-09 Lm 14.12 over Plum Bayou?

It is owned by the State Highway Agency.