US Bridges

SH 321 Log 1.29 over Union Pac R/R Creek

Good

Lonoke County, Arkansas · 1.4 MI E US 67 · Structure no. 0000000000A6467

Built
2021
4 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
850 ft
10 main spans
Daily traffic
18,000
2014 count
Owner
State
State Highway Agency

About this bridge

SH 321 Log 1.29 over Union Pac R/R Creek is a steel continuous stringer/multi-beam or girder carrying SH 321 Log 1.29 over Union Pac R/R Creek in Lonoke County, Arkansas. It was built in 2021, so it is 4 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 18,000 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 41 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSH 321 Log 1.29
CrossesUnion Pac R/R Creek
Location1.4 MI E US 67
RouteState Highway 321
CountyLonoke County
StateArkansas
Coordinates34.94072, -92.0425
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHL 93
Structure length850 ft (259.1 m)
Longest span116 ft (35.4 m)
Deck width41 ft (12.4 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,000 (2014)
Projected traffic24,859 by 2028
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 321 Log 1.29 over Union Pac R/R Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is SH 321 Log 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 2023.

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

About 18,000 vehicles per day (2014 count), of which roughly 1% are trucks.

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

The structure is 850 ft (259.1 m) long with a longest span of 116 ft (35.4 m) and a deck 41 ft wide.

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

It is owned by the State Highway Agency.