US Bridges

SW 30th over Fly Creek

PoorPosted for load

Cherokee County, Kansas · 5.0W 0.7S of Neutral · Structure no. 000111087007002

Built
1959
66 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
71 ft
2 main spans
Daily traffic
35
2019 count
Owner
County
County Highway Agency

About this bridge

SW 30th over Fly Creek is a steel continuous stringer/multi-beam or girder carrying SW 30th over Fly Creek in Cherokee County, Kansas. It was built in 1959, so it is 66 years old, older than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 35 vehicles a day, roughly 5% of them trucks, projected to reach 40 by 2043. The structure is 71 ft (21.6 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSW 30th
CrossesFly Creek
Location5.0W 0.7S of Neutral
RouteCounty Highway 0
StateKansas
Coordinates37.08983, -94.88631
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.1 US tons
Inventory rating19.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length71 ft (21.6 m)
Longest span34 ft (10.3 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic35 (2019)
Projected traffic40 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$600,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SW 30th over Fly Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is SW 30th over Fly Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does SW 30th over Fly Creek carry?

About 35 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is SW 30th over Fly Creek?

The structure is 71 ft (21.6 m) long with a longest span of 34 ft (10.3 m) and a deck 22 ft wide.

Who owns SW 30th over Fly Creek?

It is owned by the County Highway Agency.