US Bridges

Rs 1485 40 Ave over Trib. to Silver Creek

PoorPosted for load

Harper County, Kansas · 1.0N 6.0W of Freeport · Structure no. 000000000390440

Built
1925
100 years old
Condition
Poor
inspected February 2023
Type
Slab
Concrete Continuous
Length
30 ft
3 main spans
Daily traffic
66
2021 count
Owner
County
County Highway Agency

About this bridge

Rs 1485 40 Ave over Trib. to Silver Creek is a concrete continuous slab carrying Rs 1485 40 Ave over Trib. to Silver Creek in Harper County, Kansas. It was built in 1925, so it is 100 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 4 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 66 vehicles a day, roughly 3% of them trucks, projected to reach 136 by 2043. The structure is 30 ft (9.1 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRs 1485 40 Ave
CrossesTrib. to Silver Creek
Location1.0N 6.0W of Freeport
RouteCounty Highway 1485
CountyHarper County
StateKansas
Coordinates37.21028, -97.96661
Functional classRural Major Collector

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating20 US tons
Inventory rating20 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span20 ft (6 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic66 (2021)
Projected traffic136 by 2043
Trucks3%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$260,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rs 1485 40 Ave over Trib. to Silver Creek built?

It was built in 1925, making it 100 years old in 2025.

What condition is Rs 1485 40 Ave over Trib. to Silver 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 February 2023.

How much traffic does Rs 1485 40 Ave over Trib. to Silver Creek carry?

About 66 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Rs 1485 40 Ave over Trib. to Silver Creek?

The structure is 30 ft (9.1 m) long with a longest span of 20 ft (6 m) and a deck 23 ft wide.

Who owns Rs 1485 40 Ave over Trib. to Silver Creek?

It is owned by the County Highway Agency.