US Bridges

K18 HWY over Coal Creek

Good

Ottawa County, Kansas · 7.65 MI E JCT RS748 · Structure no. 999901800720231

Built
1934
91 years old, rebuilt 1995
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
193 ft
3 main spans
Daily traffic
481
2023 count
Owner
State
State Highway Agency

About this bridge

K18 HWY over Coal Creek is a steel continuous stringer/multi-beam or girder carrying K18 HWY over Coal Creek in Ottawa County, Kansas. It was built in 1934 and reconstructed in 1995, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 481 vehicles a day, roughly 29% of them trucks, projected to reach 587 by 2044. The structure is 193 ft (58.7 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesK18 HWY
CrossesCoal Creek
Location7.65 MI E JCT RS748
RouteState Highway 18
StateKansas
Coordinates39.03056, -97.47167
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67.7 US tons
Inventory rating40.6 US tons

Structure

MaterialSteel Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length193 ft (58.7 m)
Longest span70 ft (21.3 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic481 (2023)
Projected traffic587 by 2044
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Coal Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1995.

What condition is K18 HWY over Coal 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 November 2024.

How much traffic does K18 HWY over Coal Creek carry?

About 481 vehicles per day (2023 count), of which roughly 29% are trucks.

How long is K18 HWY over Coal Creek?

The structure is 193 ft (58.7 m) long with a longest span of 70 ft (21.3 m) and a deck 34 ft wide.

Who owns K18 HWY over Coal Creek?

It is owned by the State Highway Agency.