US Bridges

SH 31 White County over Cypress Bayou

PoorPosted for load

White County, Arkansas · .1 MI N of Lonoke CO Line · Structure no. 000000000002867

Built
1955
70 years old
Condition
Poor
inspected June 2024
Type
Channel Beam
Concrete
Length
247 ft
13 main spans
Daily traffic
4,059
2015 count
Owner
State
State Highway Agency

About this bridge

SH 31 White County over Cypress Bayou is a concrete channel beam carrying SH 31 White County over Cypress Bayou in White County, Arkansas. It was built in 1955, so it is 70 years old, older than the Arkansas average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 4,059 vehicles a day, roughly 1% of them trucks, projected to reach 4,336 by 2028. The structure is 247 ft (75.3 m) long and 26 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesSH 31 White County
CrossesCypress Bayou
Location.1 MI N of Lonoke CO Line
RouteState Highway 31
CountyWhite County
StateArkansas
Coordinates35.02486, -91.8735
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating18 US tons
Inventory rating11 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans13
Design loadH 15
Structure length247 ft (75.3 m)
Longest span19 ft (5.8 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,059 (2015)
Projected traffic4,336 by 2028
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$768,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 31 White County over Cypress Bayou built?

It was built in 1955, making it 70 years old in 2025.

What condition is SH 31 White County over Cypress Bayou in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does SH 31 White County over Cypress Bayou carry?

About 4,059 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is SH 31 White County over Cypress Bayou?

The structure is 247 ft (75.3 m) long with a longest span of 19 ft (5.8 m) and a deck 26 ft wide.

Who owns SH 31 White County over Cypress Bayou?

It is owned by the State Highway Agency.