US Bridges

K-99 Highway over South Br Mill CR DR

Good

Wabaunsee County, Kansas · 1.73 MI N of K-4 · Structure no. 999909900991031

Built
2007
18 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
451
2023 count
Owner
State
State Highway Agency

About this bridge

K-99 Highway over South Br Mill CR DR is a concrete culvert carrying K-99 Highway over South Br Mill CR DR in Wabaunsee County, Kansas. It was built in 2007, so it is 18 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 451 vehicles a day, roughly 14% of them trucks, projected to reach 488 by 2044. The structure is 29 ft (8.7 m) long and 73 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesK-99 Highway
CrossesSouth Br Mill CR DR
Location1.73 MI N of K-4
RouteState Highway 99
CountyWabaunsee County
StateKansas
Coordinates38.91639, -96.27556
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
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating110.1 US tons
Inventory rating95 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length29 ft (8.7 m)
Longest span14 ft (4.3 m)
Deck width73 ft (22.3 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic451 (2023)
Projected traffic488 by 2044
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 K-99 Highway over South Br Mill CR DR built?

It was built in 2007, making it 18 years old in 2025.

What condition is K-99 Highway over South Br Mill CR DR 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 May 2023.

How much traffic does K-99 Highway over South Br Mill CR DR carry?

About 451 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is K-99 Highway over South Br Mill CR DR?

The structure is 29 ft (8.7 m) long with a longest span of 14 ft (4.3 m) and a deck 73 ft wide.

Who owns K-99 Highway over South Br Mill CR DR?

It is owned by the State Highway Agency.