US Bridges

K18 HWY over Chapman Creek

Fair

Dickinson County, Kansas · 4.85 MI E Ejct K15 · Structure no. 999901800210701

Built
1934
91 years old, rebuilt 2001
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
262 ft
4 main spans
Daily traffic
764
2023 count
Owner
State
State Highway Agency

About this bridge

K18 HWY over Chapman Creek is a steel continuous stringer/multi-beam or girder carrying K18 HWY over Chapman Creek in Dickinson County, Kansas. It was built in 1934 and reconstructed in 2001, so it is 91 years old, older than the Kansas average of 52.8 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 764 vehicles a day, roughly 26% of them trucks, projected to reach 932 by 2044. The structure is 262 ft (80 m) long and 30 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

Location

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CarriesK18 HWY
CrossesChapman Creek
Location4.85 MI E Ejct K15
RouteState Highway 18
CountyDickinson County
StateKansas
Coordinates39.03111, -97.04
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating66 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length262 ft (80 m)
Longest span73 ft (22.1 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic764 (2023)
Projected traffic932 by 2044
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 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 Chapman Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 2001.

What condition is K18 HWY over Chapman Creek 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 October 2023.

How much traffic does K18 HWY over Chapman Creek carry?

About 764 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is K18 HWY over Chapman Creek?

The structure is 262 ft (80 m) long with a longest span of 73 ft (22.1 m) and a deck 30 ft wide.

Who owns K18 HWY over Chapman Creek?

It is owned by the State Highway Agency.