US Bridges

K99 HWY over Coal Creek

Good

Lyon County, Kansas · 6.02 MI S US50 · Structure no. 999909900561401

Built
1987
38 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
2,544
2023 count
Owner
State
State Highway Agency

About this bridge

K99 HWY over Coal Creek is a concrete continuous slab carrying K99 HWY over Coal Creek in Lyon County, Kansas. It was built in 1987, so it is 38 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 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 2,544 vehicles a day, roughly 9% of them trucks, projected to reach 2,595 by 2044. The structure is 102 ft (31.2 m) long and 42 ft wide.

CarriesK99 HWY
CrossesCoal Creek
Location6.02 MI S US50
RouteState Highway 99
StateKansas
Coordinates38.32, -96.18028
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length102 ft (31.2 m)
Longest span40 ft (12.2 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,544 (2023)
Projected traffic2,595 by 2044
Trucks9%
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 K99 HWY over Coal Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is K99 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 June 2024.

How much traffic does K99 HWY over Coal Creek carry?

About 2,544 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is K99 HWY over Coal Creek?

The structure is 102 ft (31.2 m) long with a longest span of 40 ft (12.2 m) and a deck 42 ft wide.

Who owns K99 HWY over Coal Creek?

It is owned by the State Highway Agency.