US Bridges

Rs 1 600 St. over Onion Creek

FairPosted for load

Allen County, Kansas · 2.0W 3.0N of Humboldt · Structure no. 000000000010050

Built
1948
77 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
103 ft
3 main spans
Daily traffic
296
2006 count
Owner
County
County Highway Agency

About this bridge

Rs 1 600 St. over Onion Creek is a concrete continuous slab carrying Rs 1 600 St. over Onion Creek in Allen County, Kansas. It was built in 1948, so it is 77 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 296 vehicles a day, roughly 10% of them trucks, projected to reach 368 by 2044. The structure is 103 ft (31.4 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRs 1 600 St.
CrossesOnion Creek
Location2.0W 3.0N of Humboldt
RouteCounty Highway 1
CountyAllen County
StateKansas
Coordinates37.86274, -95.48254
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18 US tons
Inventory rating9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length103 ft (31.4 m)
Longest span38 ft (11.6 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic296 (2006)
Projected traffic368 by 2044
Trucks10%
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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$315,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rs 1 600 St. over Onion Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is Rs 1 600 St. over Onion 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 February 2024.

How much traffic does Rs 1 600 St. over Onion Creek carry?

About 296 vehicles per day (2006 count), of which roughly 10% are trucks.

How long is Rs 1 600 St. over Onion Creek?

The structure is 103 ft (31.4 m) long with a longest span of 38 ft (11.6 m) and a deck 28 ft wide.

Who owns Rs 1 600 St. over Onion Creek?

It is owned by the County Highway Agency.