US Bridges

Silver Lake 30.20 over Trib Cheney Reservoir

Good

Reno County, Kansas · 0.7N 5.0E Pretty Prairie · Structure no. 000780755306040

Built
2019
6 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Concrete
Length
92 ft
2 main spans
Daily traffic
20
2021 count
Owner
County
County Highway Agency

About this bridge

Silver Lake 30.20 over Trib Cheney Reservoir is a concrete stringer/multi-beam or girder carrying Silver Lake 30.20 over Trib Cheney Reservoir in Reno County, Kansas. It was built in 2019, so it is 6 years old, younger than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20 vehicles a day, roughly 10% of them trucks, projected to reach 25 by 2046. The structure is 92 ft (27.9 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSilver Lake 30.20
CrossesTrib Cheney Reservoir
Location0.7N 5.0E Pretty Prairie
RouteCounty Highway 402
StateKansas
Coordinates37.79201, -97.93069
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating37.1 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length92 ft (27.9 m)
Longest span45 ft (13.7 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic20 (2021)
Projected traffic25 by 2046
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Silver Lake 30.20 over Trib Cheney Reservoir built?

It was built in 2019, making it 6 years old in 2025.

What condition is Silver Lake 30.20 over Trib Cheney Reservoir in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does Silver Lake 30.20 over Trib Cheney Reservoir carry?

About 20 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Silver Lake 30.20 over Trib Cheney Reservoir?

The structure is 92 ft (27.9 m) long with a longest span of 45 ft (13.7 m) and a deck 28 ft wide.

Who owns Silver Lake 30.20 over Trib Cheney Reservoir?

It is owned by the County Highway Agency.