US Bridges

3200 RD Mile 8 over Onion Creek Trib.

FairPosted for load

Montgomery County, Kansas · 1.0W 1.3S of Bolton · Structure no. 000630983606940

Built
1979
46 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
1 main span
Daily traffic
80
2010 count
Owner
County
County Highway Agency

About this bridge

3200 RD Mile 8 over Onion Creek Trib. is a steel stringer/multi-beam or girder carrying 3200 RD Mile 8 over Onion Creek Trib. in Montgomery County, Kansas. It was built in 1979, so it is 46 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 80 vehicles a day, projected to reach 96 by 2039. The structure is 51 ft (15.5 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries3200 RD Mile 8
CrossesOnion Creek Trib.
Location1.0W 1.3S of Bolton
RouteCounty Highway 0
CountyMontgomery County
StateKansas
Coordinates37.13891, -95.82598
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39 US tons
Inventory rating23.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length51 ft (15.5 m)
Longest span49 ft (14.9 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic80 (2010)
Projected traffic96 by 2039
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 3200 RD Mile 8 over Onion Creek Trib. built?

It was built in 1979, making it 46 years old in 2025.

What condition is 3200 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 3200 RD Mile 8 over Onion Creek Trib. carry?

About 80 vehicles per day (2010 count).

How long is 3200 RD Mile 8 over Onion Creek Trib.?

The structure is 51 ft (15.5 m) long with a longest span of 49 ft (14.9 m) and a deck 25 ft wide.

Who owns 3200 RD Mile 8 over Onion Creek Trib.?

It is owned by the County Highway Agency.