US Bridges

21st Rd. 20.0-Z.7 over Jim Creek

Good

Marshall County, Kansas · 5.0S 0.5W of Frankfort · Structure no. 000580917003507

Built
1999
26 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
39 ft
1 main span
Daily traffic
10
2007 count
Owner
County
County Highway Agency

About this bridge

21st Rd. 20.0-Z.7 over Jim Creek is a steel stringer/multi-beam or girder carrying 21st Rd. 20.0-Z.7 over Jim Creek in Marshall County, Kansas. It was built in 1999, so it is 26 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.

It carries about 10 vehicles a day, projected to reach 10 by 2043. The structure is 39 ft (11.9 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries21st Rd. 20.0-Z.7
CrossesJim Creek
Location5.0S 0.5W of Frankfort
RouteCounty Highway 0
CountyMarshall County
StateKansas
Coordinates39.62879, -96.42684
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.5 US tons
Inventory rating37.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span38 ft (11.5 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2007)
Projected traffic10 by 2043
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 21st Rd. 20.0-Z.7 over Jim Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is 21st Rd. 20.0-Z.7 over Jim 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 May 2023.

How much traffic does 21st Rd. 20.0-Z.7 over Jim Creek carry?

About 10 vehicles per day (2007 count).

How long is 21st Rd. 20.0-Z.7 over Jim Creek?

The structure is 39 ft (11.9 m) long with a longest span of 38 ft (11.5 m) and a deck 20 ft wide.

Who owns 21st Rd. 20.0-Z.7 over Jim Creek?

It is owned by the County Highway Agency.