US Bridges

U.S. 59 NB over Illinois River

Fair

Adair County, Oklahoma · 10.6N JCT US62/US59 · Structure no. 281960000000000

Built
2009
16 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
554 ft
4 main spans
Daily traffic
3,200
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 59 NB over Illinois River is a prestressed concrete stringer/multi-beam or girder carrying U.S. 59 NB over Illinois River in Adair County, Oklahoma. It was built in 2009, so it is 16 years old, younger than the Oklahoma average of 47.8 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 3,200 vehicles a day, roughly 16% of them trucks, projected to reach 5,120 by 2042. The structure is 554 ft (168.8 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesU.S. 59 NB
CrossesIllinois River
Location10.6N JCT US62/US59
RouteU.S. Route 59
CountyAdair County
StateOklahoma
Coordinates36.12923, -94.57199
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating59.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length554 ft (168.8 m)
Longest span139 ft (42.3 m)
Deck width41 ft (12.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2022)
Projected traffic5,120 by 2042
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

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$2.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 59 NB over Illinois River built?

It was built in 2009, making it 16 years old in 2025.

What condition is U.S. 59 NB over Illinois River 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 April 2024.

How much traffic does U.S. 59 NB over Illinois River carry?

About 3,200 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is U.S. 59 NB over Illinois River?

The structure is 554 ft (168.8 m) long with a longest span of 139 ft (42.3 m) and a deck 41 ft wide.

Who owns U.S. 59 NB over Illinois River?

It is owned by the State Highway Agency.