US Bridges

K18 HWY over Kansas River Drg

Good

Riley County, Kansas · 4.59 MI E Sjct K177 · Structure no. 999901800810891

Built
2015
10 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
82 ft
3 main spans
Daily traffic
898
2023 count
Owner
State
State Highway Agency

About this bridge

K18 HWY over Kansas River Drg is a concrete continuous slab carrying K18 HWY over Kansas River Drg in Riley County, Kansas. It was built in 2015, so it is 10 years old, younger than the Kansas average of 52.8 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 898 vehicles a day, roughly 7% of them trucks, projected to reach 1,283 by 2044. The structure is 82 ft (25.1 m) long and 38 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

Location

Open in Google Maps
CarriesK18 HWY
CrossesKansas River Drg
Location4.59 MI E Sjct K177
RouteState Highway 18
CountyRiley County
StateKansas
Coordinates39.15917, -96.46944
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 protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating72.5 US tons
Inventory rating56.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHL 93
Structure length82 ft (25.1 m)
Longest span32 ft (9.8 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic898 (2023)
Projected traffic1,283 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.7 mi (72 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 K18 HWY over Kansas River Drg built?

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

What condition is K18 HWY over Kansas River Drg 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 May 2023.

How much traffic does K18 HWY over Kansas River Drg carry?

About 898 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is K18 HWY over Kansas River Drg?

The structure is 82 ft (25.1 m) long with a longest span of 32 ft (9.8 m) and a deck 38 ft wide.

Who owns K18 HWY over Kansas River Drg?

It is owned by the State Highway Agency.