US Bridges

SH 27 over Illinois Bayou

Fair

Pope County, Arkansas · 3.37 MI N SH 105 · Structure no. 000000000006250

Built
1987
38 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
502 ft
10 main spans
Daily traffic
260
2018 count
Owner
State
State Highway Agency

About this bridge

SH 27 over Illinois Bayou is a steel stringer/multi-beam or girder carrying SH 27 over Illinois Bayou in Pope 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 260 vehicles a day, roughly 1% of them trucks, projected to reach 370 by 2028. The structure is 502 ft (153 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSH 27
CrossesIllinois Bayou
Location3.37 MI N SH 105
RouteState Highway 27
CountyPope County
StateArkansas
Coordinates35.50198, -92.97159
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length502 ft (153 m)
Longest span50 ft (15.2 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic260 (2018)
Projected traffic370 by 2028
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 27 over Illinois Bayou built?

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

What condition is SH 27 over Illinois Bayou in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does SH 27 over Illinois Bayou carry?

About 260 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is SH 27 over Illinois Bayou?

The structure is 502 ft (153 m) long with a longest span of 50 ft (15.2 m) and a deck 31 ft wide.

Who owns SH 27 over Illinois Bayou?

It is owned by the State Highway Agency.