US Bridges

K4 HWY over South Branch Mill Creek

Good

Wabaunsee County, Kansas · 0.68 MI E Wjct K99 · Structure no. 999900400990381

Built
1955
70 years old
Condition
Good
inspected May 2023
Type
Tee Beam
Concrete
Length
137 ft
3 main spans
Daily traffic
436
2023 count
Owner
State
State Highway Agency

About this bridge

K4 HWY over South Branch Mill Creek is a concrete tee beam carrying K4 HWY over South Branch Mill Creek in Wabaunsee County, Kansas. It was built in 1955, so it is 70 years old, older 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 436 vehicles a day, roughly 14% of them trucks, projected to reach 491 by 2044. The structure is 137 ft (41.7 m) long and 31 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

Location

Open in Google Maps
CarriesK4 HWY
CrossesSouth Branch Mill Creek
Location0.68 MI E Wjct K99
RouteState Highway 4
CountyWabaunsee County
StateKansas
Coordinates38.88722, -96.27
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 inspectionMay 2023
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 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 rating50 US tons
Inventory rating31.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length137 ft (41.7 m)
Longest span54 ft (16.5 m)
Deck width31 ft (9.6 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic436 (2023)
Projected traffic491 by 2044
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 K4 HWY over South Branch Mill Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is K4 HWY over South Branch Mill 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 May 2023.

How much traffic does K4 HWY over South Branch Mill Creek carry?

About 436 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is K4 HWY over South Branch Mill Creek?

The structure is 137 ft (41.7 m) long with a longest span of 54 ft (16.5 m) and a deck 31 ft wide.

Who owns K4 HWY over South Branch Mill Creek?

It is owned by the State Highway Agency.