US Bridges

3200 RD Mile 21 over Big Hill Creek

Fair

Montgomery County, Kansas · 1.0S 0.5E of Liberty · Structure no. 000631009506940

Built
1992
33 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
79 ft
2 main spans
Daily traffic
10
2010 count
Owner
County
County Highway Agency

About this bridge

3200 RD Mile 21 over Big Hill Creek is a steel continuous stringer/multi-beam or girder carrying 3200 RD Mile 21 over Big Hill Creek in Montgomery County, Kansas. It was built in 1992, so it is 33 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 10 vehicles a day, roughly 1% of them trucks, projected to reach 10 by 2039. The structure is 79 ft (24.1 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries3200 RD Mile 21
CrossesBig Hill Creek
Location1.0S 0.5E of Liberty
RouteCounty Highway 0
CountyMontgomery County
StateKansas
Coordinates37.13685, -95.58758
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to 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 alignment6: Equal to present minimum criteria
Operating rating48 US tons
Inventory rating28.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length79 ft (24.1 m)
Longest span57 ft (17.5 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2010)
Projected traffic10 by 2039
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 21 over Big Hill Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is 3200 RD Mile 21 over Big Hill 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 March 2023.

How much traffic does 3200 RD Mile 21 over Big Hill Creek carry?

About 10 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is 3200 RD Mile 21 over Big Hill Creek?

The structure is 79 ft (24.1 m) long with a longest span of 57 ft (17.5 m) and a deck 22 ft wide.

Who owns 3200 RD Mile 21 over Big Hill Creek?

It is owned by the County Highway Agency.