US Bridges

K99 HWY over Hill Creek

Fair

Lyon County, Kansas · 3.70 MI N of Kta N JCT · Structure no. 999909900561341

Built
1981
44 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
142 ft
3 main spans
Daily traffic
672
2023 count
Owner
State
State Highway Agency

About this bridge

K99 HWY over Hill Creek is a concrete continuous slab carrying K99 HWY over Hill Creek in Lyon County, Kansas. It was built in 1981, so it is 44 years old, younger 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 672 vehicles a day, roughly 24% of them trucks, projected to reach 713 by 2044. The structure is 142 ft (43.4 m) long and 38 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesK99 HWY
CrossesHill Creek
Location3.70 MI N of Kta N JCT
RouteState Highway 99
CountyLyon County
StateKansas
Coordinates38.62528, -96.0975
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length142 ft (43.4 m)
Longest span56 ft (17.1 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic672 (2023)
Projected traffic713 by 2044
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 K99 HWY over Hill Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is K99 HWY over Hill 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 June 2024.

How much traffic does K99 HWY over Hill Creek carry?

About 672 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is K99 HWY over Hill Creek?

The structure is 142 ft (43.4 m) long with a longest span of 56 ft (17.1 m) and a deck 38 ft wide.

Who owns K99 HWY over Hill Creek?

It is owned by the State Highway Agency.