US Bridges

W.20th St. S. over Silver Creek

FairPosted for load

Sumner County, Kansas · 1.3W of Milan · Structure no. 000960779706780

Built
1930
95 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
43 ft
1 main span
Daily traffic
500
2013 count
Owner
County
County Highway Agency

About this bridge

W.20th St. S. over Silver Creek is a concrete tee beam carrying W.20th St. S. over Silver Creek in Sumner County, Kansas. It was built in 1930, so it is 95 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 500 vehicles a day, roughly 1% of them trucks, projected to reach 500 by 2043. The structure is 43 ft (13.1 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesW.20th St. S.
CrossesSilver Creek
Location1.3W of Milan
RouteCounty Highway 9614
CountySumner County
StateKansas
Coordinates37.25634, -97.69785
Functional classRural Minor 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.
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating30.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span40 ft (12.1 m)
Deck width22 ft (6.7 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic500 (2013)
Projected traffic500 by 2043
Trucks1%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$125,000
NavigationNo navigation control on waterway

Frequently asked questions

When was W.20th St. S. over Silver Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is W.20th St. S. over Silver 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 May 2023.

How much traffic does W.20th St. S. over Silver Creek carry?

About 500 vehicles per day (2013 count), of which roughly 1% are trucks.

How long is W.20th St. S. over Silver Creek?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.1 m) and a deck 22 ft wide.

Who owns W.20th St. S. over Silver Creek?

It is owned by the County Highway Agency.