US Bridges

K99 HWY over Trib S Branch Mill CR

Good

Wabaunsee County, Kansas · 0.03 MI N of W JCT K-4 · Structure no. 999909900991041

Built
2012
13 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
122 ft
3 main spans
Daily traffic
451
2023 count
Owner
State
State Highway Agency

About this bridge

K99 HWY over Trib S Branch Mill CR is a concrete continuous slab carrying K99 HWY over Trib S Branch Mill CR in Wabaunsee County, Kansas. It was built in 2012, so it is 13 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 122 ft (37.3 m) long and 39 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesK99 HWY
CrossesTrib S Branch Mill CR
Location0.03 MI N of W JCT K-4
RouteState Highway 99
StateKansas
Coordinates38.89278, -96.28
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 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 rating70 US tons
Inventory rating53.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length122 ft (37.3 m)
Longest span48 ft (14.6 m)
Deck width39 ft (11.9 m)
Roadway width37 ft (11.3 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 closed29.8 mi (48 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 Trib S Branch Mill CR built?

It was built in 2012, making it 13 years old in 2025.

What condition is K99 HWY over Trib S Branch Mill CR 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 K99 HWY over Trib S Branch Mill CR carry?

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

How long is K99 HWY over Trib S Branch Mill CR?

The structure is 122 ft (37.3 m) long with a longest span of 48 ft (14.6 m) and a deck 39 ft wide.

Who owns K99 HWY over Trib S Branch Mill CR?

It is owned by the State Highway Agency.