US Bridges

SH 31 Log 7.67 over Wattensaw Bayou

Good

Lonoke County, Arkansas · 6.9 MI N JCT I-40 · Structure no. 000000000006131

Built
1987
38 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
92 ft
3 main spans
Daily traffic
4,600
2018 count
Owner
State
State Highway Agency

About this bridge

SH 31 Log 7.67 over Wattensaw Bayou is a steel continuous stringer/multi-beam or girder carrying SH 31 Log 7.67 over Wattensaw Bayou in Lonoke County, Arkansas. It was built in 1987, so it is 38 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 4,600 vehicles a day, roughly 1% of them trucks, projected to reach 5,662 by 2028. The structure is 92 ft (28 m) long and 35 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesSH 31 Log 7.67
CrossesWattensaw Bayou
Location6.9 MI N JCT I-40
RouteState Highway 31
CountyLonoke County
StateArkansas
Coordinates34.88517, -91.87459
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 inspectionNovember 2023
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 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

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length92 ft (28 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,600 (2018)
Projected traffic5,662 by 2028
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 31 Log 7.67 over Wattensaw Bayou built?

It was built in 1987, making it 38 years old in 2025.

What condition is SH 31 Log 7.67 over Wattensaw 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 November 2023.

How much traffic does SH 31 Log 7.67 over Wattensaw Bayou carry?

About 4,600 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is SH 31 Log 7.67 over Wattensaw Bayou?

The structure is 92 ft (28 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns SH 31 Log 7.67 over Wattensaw Bayou?

It is owned by the State Highway Agency.