US Bridges

K99 HWY over Boxelder Creek

Fair

Pottawatomie County, Kansas · 6.41 MI N US24 · Structure no. 999909900750351

Built
1936
89 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
40 ft
1 main span
Daily traffic
1,908
2023 count
Owner
State
State Highway Agency

About this bridge

K99 HWY over Boxelder Creek is a concrete culvert carrying K99 HWY over Boxelder Creek in Pottawatomie County, Kansas. It was built in 1936, so it is 89 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 1,908 vehicles a day, roughly 10% of them trucks, projected to reach 2,194 by 2044. The structure is 40 ft (12.2 m) long and 36 ft wide. If it were closed, the detour would be 42.9 mi (69 km).

Location

Open in Google Maps
CarriesK99 HWY
CrossesBoxelder Creek
Location6.41 MI N US24
RouteState Highway 99
CountyPottawatomie County
StateKansas
Coordinates39.29639, -96.3375
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating47 US tons
Inventory rating28 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,908 (2023)
Projected traffic2,194 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed42.9 mi (69 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 Boxelder Creek built?

It was built in 1936, making it 89 years old in 2025.

What condition is K99 HWY over Boxelder 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 May 2023.

How much traffic does K99 HWY over Boxelder Creek carry?

About 1,908 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is K99 HWY over Boxelder Creek?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 36 ft wide.

Who owns K99 HWY over Boxelder Creek?

It is owned by the State Highway Agency.