US Bridges

21-17.6 Local over Four Mile Creek

PoorPosted for load

Neosho County, Kansas · 1.5N 2.1E of Erie · Structure no. 000671051606320

Built
1920
105 years old
Condition
Poor
inspected November 2024
Type
Slab
Concrete Continuous
Length
35 ft
2 main spans
Daily traffic
30
2019 count
Owner
County
County Highway Agency

About this bridge

21-17.6 Local over Four Mile Creek is a concrete continuous slab carrying 21-17.6 Local over Four Mile Creek in Neosho County, Kansas. It was built in 1920, so it is 105 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 36 by 2044. The structure is 35 ft (10.7 m) long and 22 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries21-17.6 Local
CrossesFour Mile Creek
Location1.5N 2.1E of Erie
RouteCounty Highway 0
CountyNeosho County
StateKansas
Coordinates37.59106, -95.21589
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 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 rating32 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span16 ft (4.9 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 traffic30 (2019)
Projected traffic36 by 2044
Trucks10%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$290,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 21-17.6 Local over Four Mile Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is 21-17.6 Local over Four Mile 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 November 2024.

How much traffic does 21-17.6 Local over Four Mile Creek carry?

About 30 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is 21-17.6 Local over Four Mile Creek?

The structure is 35 ft (10.7 m) long with a longest span of 16 ft (4.9 m) and a deck 22 ft wide.

Who owns 21-17.6 Local over Four Mile Creek?

It is owned by the County Highway Agency.