US Bridges

K99 HWY over Duck Creek

Good

Lyon County, Kansas · 1.80 MI N of Kta N JCT · Structure no. 999909900561331

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

About this bridge

K99 HWY over Duck Creek is a concrete continuous slab carrying K99 HWY over Duck 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 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 672 vehicles a day, roughly 24% of them trucks, projected to reach 713 by 2044. The structure is 102 ft (31.2 m) long and 38 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesK99 HWY
CrossesDuck Creek
Location1.80 MI N of Kta N JCT
RouteState Highway 99
CountyLyon County
StateKansas
Coordinates38.59806, -96.0975
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 geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length102 ft (31.2 m)
Longest span40 ft (12.2 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 closed14.3 mi (23 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 Duck Creek built?

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

What condition is K99 HWY over Duck 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 Duck Creek carry?

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

How long is K99 HWY over Duck Creek?

The structure is 102 ft (31.2 m) long with a longest span of 40 ft (12.2 m) and a deck 38 ft wide.

Who owns K99 HWY over Duck Creek?

It is owned by the State Highway Agency.