US Bridges

N4545 (1168C) over Illinois River

Good

Cherokee County, Oklahoma · .2SE of S.H. 10 · Structure no. 308360000000000

Built
2015
10 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
423 ft
3 main spans
Daily traffic
200
2022 count
Owner
County
County Highway Agency

About this bridge

N4545 (1168C) over Illinois River is a prestressed concrete stringer/multi-beam or girder carrying N4545 (1168C) over Illinois River in Cherokee County, Oklahoma. It was built in 2015, so it is 10 years old, younger than the Oklahoma average of 47.8 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 200 vehicles a day, roughly 15% of them trucks, projected to reach 320 by 2042. The structure is 423 ft (128.9 m) long and 34 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesN4545 (1168C)
CrossesIllinois River
Location.2SE of S.H. 10
RouteCounty Highway N4545
CountyCherokee County
StateOklahoma
Coordinates36.03222, -94.91111
Functional classRural Major Collector

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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating94 US tons
Inventory rating56 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length423 ft (128.9 m)
Longest span140 ft (42.7 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2022)
Projected traffic320 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was N4545 (1168C) over Illinois River built?

It was built in 2015, making it 10 years old in 2025.

What condition is N4545 (1168C) over Illinois River 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 August 2023.

How much traffic does N4545 (1168C) over Illinois River carry?

About 200 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N4545 (1168C) over Illinois River?

The structure is 423 ft (128.9 m) long with a longest span of 140 ft (42.7 m) and a deck 34 ft wide.

Who owns N4545 (1168C) over Illinois River?

It is owned by the County Highway Agency.