US Bridges

SH 300 Log 12.80 over Mill Bayou

Good

Pulaski County, Arkansas · 7.5 MI No SH 10 JCT · Structure no. 000000000005811

Built
1981
44 years old
Condition
Good
inspected February 2022
Type
Slab
Concrete
Length
140 ft
4 main spans
Daily traffic
1,900
2018 count
Owner
State
State Highway Agency

About this bridge

SH 300 Log 12.80 over Mill Bayou is a concrete slab carrying SH 300 Log 12.80 over Mill Bayou in Pulaski County, Arkansas. It was built in 1981, so it is 44 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 1,900 vehicles a day, roughly 1% of them trucks, projected to reach 2,722 by 2028. The structure is 140 ft (42.7 m) long and 35 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

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CarriesSH 300 Log 12.80
CrossesMill Bayou
Location7.5 MI No SH 10 JCT
RouteState Highway 300
CountyPulaski County
StateArkansas
Coordinates34.89629, -92.50239
Functional classRural 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 protection7 GoodSome minor problems.
Last inspectionFebruary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being 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

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span35 ft (10.7 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2018)
Projected traffic2,722 by 2028
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 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 300 Log 12.80 over Mill Bayou built?

It was built in 1981, making it 44 years old in 2025.

What condition is SH 300 Log 12.80 over Mill Bayou 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 February 2022.

How much traffic does SH 300 Log 12.80 over Mill Bayou carry?

About 1,900 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is SH 300 Log 12.80 over Mill Bayou?

The structure is 140 ft (42.7 m) long with a longest span of 35 ft (10.7 m) and a deck 35 ft wide.

Who owns SH 300 Log 12.80 over Mill Bayou?

It is owned by the State Highway Agency.