US Bridges

SH 321LOG 1.29 over Union Pac R/R Creek

Good

Lonoke County, Arkansas · 1.4 MI E US 67 · Structure no. 000000000006467

Built
1992
33 years old
Condition
Good
inspected October 2021
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
850 ft
11 main spans
Daily traffic
20,000
2018 count
Owner
State
State Highway Agency

About this bridge

SH 321LOG 1.29 over Union Pac R/R Creek is a steel continuous stringer/multi-beam or girder carrying SH 321LOG 1.29 over Union Pac R/R Creek in Lonoke County, Arkansas. It was built in 1992, so it is 33 years old, younger than the Arkansas average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20,000 vehicles a day, roughly 1% of them trucks, projected to reach 24,859 by 2028. The structure is 850 ft (259.1 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesSH 321LOG 1.29
CrossesUnion Pac R/R Creek
Location1.4 MI E US 67
RouteState Highway 321
Coordinates34.94085, -92.04245
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating60 US tons
Inventory rating36 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length850 ft (259.1 m)
Longest span108 ft (32.9 m)
Deck width43 ft (13.1 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,000 (2018)
Projected traffic24,859 by 2028
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed6.2 mi (10 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 321LOG 1.29 over Union Pac R/R Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is SH 321LOG 1.29 over Union Pac R/R Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2021.

How much traffic does SH 321LOG 1.29 over Union Pac R/R Creek carry?

About 20,000 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is SH 321LOG 1.29 over Union Pac R/R Creek?

The structure is 850 ft (259.1 m) long with a longest span of 108 ft (32.9 m) and a deck 43 ft wide.

Who owns SH 321LOG 1.29 over Union Pac R/R Creek?

It is owned by the State Highway Agency.