US Bridges

122nd over Rock Creek

GoodPosted for load

Jefferson County, Kansas · 2.5W 1.5N of Rock Creek · Structure no. 000441007504005

Built
2003
22 years old
Condition
Good
inspected November 2024
Type
Box Beam or Girders - Multiple
Steel Continuous
Length
80 ft
2 main spans
Daily traffic
5
2022 count
Owner
County
County Highway Agency

About this bridge

122nd over Rock Creek is a steel continuous box beam or girders - multiple carrying 122nd over Rock Creek in Jefferson County, Kansas. It was built in 2003, so it is 22 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 5 vehicles a day, projected to reach 20 by 2040. The structure is 80 ft (24.4 m) long and 19 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries122nd
CrossesRock Creek
Location2.5W 1.5N of Rock Creek
RouteCounty Highway 0
CountyJefferson County
StateKansas
Coordinates39.26693, -95.57869
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating14.8 US tons
Inventory rating8.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel Continuous
DeckSteel plate
Main spans2
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span54 ft (16.5 m)
Deck width19 ft (5.8 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic5 (2022)
Projected traffic20 by 2040
Trucks0%
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 122nd over Rock Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is 122nd over Rock Creek 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 November 2024.

How much traffic does 122nd over Rock Creek carry?

About 5 vehicles per day (2022 count).

How long is 122nd over Rock Creek?

The structure is 80 ft (24.4 m) long with a longest span of 54 ft (16.5 m) and a deck 19 ft wide.

Who owns 122nd over Rock Creek?

It is owned by the County Highway Agency.