US Bridges

K170 HWY over Osage City Reservoir Drg

Good

Osage County, Kansas · 1.78 MI S JCT K-31 · Structure no. 999917000700641

Built
1936
89 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
964
2023 count
Owner
State
State Highway Agency

About this bridge

K170 HWY over Osage City Reservoir Drg is a concrete culvert carrying K170 HWY over Osage City Reservoir Drg in Osage 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 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 964 vehicles a day, roughly 6% of them trucks, projected to reach 983 by 2044. The structure is 29 ft (8.8 m) long and 34 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

CarriesK170 HWY
CrossesOsage City Reservoir Drg
Location1.78 MI S JCT K-31
RouteState Highway 170
StateKansas
Coordinates38.60833, -95.83861
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating60 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic964 (2023)
Projected traffic983 by 2044
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 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 K170 HWY over Osage City Reservoir Drg built?

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

What condition is K170 HWY over Osage City Reservoir Drg 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 2024.

How much traffic does K170 HWY over Osage City Reservoir Drg carry?

About 964 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is K170 HWY over Osage City Reservoir Drg?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m) and a deck 34 ft wide.

Who owns K170 HWY over Osage City Reservoir Drg?

It is owned by the State Highway Agency.