US Bridges

US73 K20 HWY over Mission Creek

Fair

Brown County, Kansas · 0.42 MI E Ejct US159 · Structure no. 999907300070081

Built
1966
59 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete Continuous
Length
133 ft
3 main spans
Daily traffic
1,772
2023 count
Owner
State
State Highway Agency

About this bridge

US73 K20 HWY over Mission Creek is a concrete continuous slab carrying US73 K20 HWY over Mission Creek in Brown County, Kansas. It was built in 1966, so it is 59 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 1,772 vehicles a day, roughly 11% of them trucks, projected to reach 2,120 by 2044. The structure is 133 ft (40.4 m) long and 63 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesUS73 K20 HWY
CrossesMission Creek
Location0.42 MI E Ejct US159
RouteU.S. Route 73
CountyBrown County
StateKansas
Coordinates39.66722, -95.51778
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length133 ft (40.4 m)
Longest span52 ft (15.8 m)
Deck width63 ft (19.1 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,772 (2023)
Projected traffic2,120 by 2044
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 US73 K20 HWY over Mission Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is US73 K20 HWY over Mission 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 June 2023.

How much traffic does US73 K20 HWY over Mission Creek carry?

About 1,772 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US73 K20 HWY over Mission Creek?

The structure is 133 ft (40.4 m) long with a longest span of 52 ft (15.8 m) and a deck 63 ft wide.

Who owns US73 K20 HWY over Mission Creek?

It is owned by the State Highway Agency.