US Bridges

3600 RD Mile 8 over Onion Creek Trib.

Fair

Montgomery County, Kansas · 3.0N 2.5E of Wayside · Structure no. 000630983506900

Built
1977
48 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
73 ft
1 main span
Daily traffic
60
2021 count
Owner
County
County Highway Agency

About this bridge

3600 RD Mile 8 over Onion Creek Trib. is a prestressed concrete stringer/multi-beam or girder carrying 3600 RD Mile 8 over Onion Creek Trib. in Montgomery County, Kansas. It was built in 1977, so it is 48 years old, younger 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 60 vehicles a day, roughly 1% of them trucks, projected to reach 72 by 2039. The structure is 73 ft (22.2 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries3600 RD Mile 8
CrossesOnion Creek Trib.
Location3.0N 2.5E of Wayside
RouteCounty Highway 0
CountyMontgomery County
StateKansas
Coordinates37.16799, -95.82864
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.7 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length73 ft (22.2 m)
Longest span70 ft (21.3 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic60 (2021)
Projected traffic72 by 2039
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 3600 RD Mile 8 over Onion Creek Trib. built?

It was built in 1977, making it 48 years old in 2025.

What condition is 3600 RD Mile 8 over Onion Creek Trib. 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 March 2023.

How much traffic does 3600 RD Mile 8 over Onion Creek Trib. carry?

About 60 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is 3600 RD Mile 8 over Onion Creek Trib.?

The structure is 73 ft (22.2 m) long with a longest span of 70 ft (21.3 m) and a deck 26 ft wide.

Who owns 3600 RD Mile 8 over Onion Creek Trib.?

It is owned by the County Highway Agency.