US Bridges

Local M.1-21.8T over Silver Creek

FairPosted for load

Riley County, Kansas · 3.4S 4.8E of Riley · Structure no. 000810885104028

Built
1920
105 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
20
2004 count
Owner
County
County Highway Agency

About this bridge

Local M.1-21.8T over Silver Creek is a steel stringer/multi-beam or girder carrying Local M.1-21.8T over Silver Creek in Riley 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 fair condition with a lowest component rating of 5 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 20 vehicles a day, projected to reach 25 by 2044. The structure is 25 ft (7.5 m) long and 15 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLocal M.1-21.8T
CrossesSilver Creek
Location3.4S 4.8E of Riley
RouteCounty Highway 0
CountyRiley County
StateKansas
Coordinates39.24936, -96.73711
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating12.6 US tons
Inventory rating9.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length25 ft (7.5 m)
Longest span24 ft (7.3 m)
Deck width15 ft (4.7 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic20 (2004)
Projected traffic25 by 2044
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$98,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Local M.1-21.8T over Silver Creek built?

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

What condition is Local M.1-21.8T 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 December 2024.

How much traffic does Local M.1-21.8T over Silver Creek carry?

About 20 vehicles per day (2004 count).

How long is Local M.1-21.8T over Silver Creek?

The structure is 25 ft (7.5 m) long with a longest span of 24 ft (7.3 m) and a deck 15 ft wide.

Who owns Local M.1-21.8T over Silver Creek?

It is owned by the County Highway Agency.