US Bridges

Rs 413 Z.8 - 230 over Rock Creek

Fair

Morris County, Kansas · 0.3N of Dunlap · Structure no. 000000000640012

Built
1942
83 years old, rebuilt 2010
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
223 ft
3 main spans
Daily traffic
215
2011 count
Owner
County
County Highway Agency

About this bridge

Rs 413 Z.8 - 230 over Rock Creek is a steel continuous stringer/multi-beam or girder carrying Rs 413 Z.8 - 230 over Rock Creek in Morris County, Kansas. It was built in 1942 and reconstructed in 2010, so it is 83 years old, older 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.

It carries about 215 vehicles a day, roughly 10% of them trucks, projected to reach 370 by 2040. The structure is 223 ft (68 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesRs 413 Z.8 - 230
CrossesRock Creek
Location0.3N of Dunlap
RouteCounty Highway 413
CountyMorris County
StateKansas
Coordinates38.58167, -96.375
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionSeptember 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length223 ft (68 m)
Longest span80 ft (24.4 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic215 (2011)
Projected traffic370 by 2040
Trucks10%
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 Rs 413 Z.8 - 230 over Rock Creek built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 2010.

What condition is Rs 413 Z.8 - 230 over Rock 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 September 2024.

How much traffic does Rs 413 Z.8 - 230 over Rock Creek carry?

About 215 vehicles per day (2011 count), of which roughly 10% are trucks.

How long is Rs 413 Z.8 - 230 over Rock Creek?

The structure is 223 ft (68 m) long with a longest span of 80 ft (24.4 m) and a deck 26 ft wide.

Who owns Rs 413 Z.8 - 230 over Rock Creek?

It is owned by the County Highway Agency.