US Bridges

K-18 HWY over Antelope Creek

Good

Wabaunsee County, Kansas · 4.82 MI E Riley Coln · Structure no. 999901800991081

Built
2013
12 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
122 ft
3 main spans
Daily traffic
862
2023 count
Owner
State
State Highway Agency

About this bridge

K-18 HWY over Antelope Creek is a concrete continuous slab carrying K-18 HWY over Antelope Creek in Wabaunsee County, Kansas. It was built in 2013, so it is 12 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 862 vehicles a day, roughly 7% of them trucks, projected to reach 934 by 2044. The structure is 122 ft (37.3 m) long and 34 ft wide.

Location

Open in Google Maps
CarriesK-18 HWY
CrossesAntelope Creek
Location4.82 MI E Riley Coln
RouteState Highway 18
CountyWabaunsee County
StateKansas
Coordinates39.15194, -96.31111
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 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 geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating68.2 US tons
Inventory rating52.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length122 ft (37.3 m)
Longest span48 ft (14.6 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic862 (2023)
Projected traffic934 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 K-18 HWY over Antelope Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is K-18 HWY over Antelope Creek 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 K-18 HWY over Antelope Creek carry?

About 862 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is K-18 HWY over Antelope Creek?

The structure is 122 ft (37.3 m) long with a longest span of 48 ft (14.6 m) and a deck 34 ft wide.

Who owns K-18 HWY over Antelope Creek?

It is owned by the State Highway Agency.