US Bridges

Crampton Road over Silver Creek

Fair

Hillsdale County, Michigan · 0.4 MI N of Camden Road · Structure no. 000000000003352

Built
1982
43 years old
Condition
Fair
inspected November 2024
Type
Culvert
Steel
Length
20 ft
2 main spans
Daily traffic
21
2014 count
Owner
County
County Highway Agency

About this bridge

Crampton Road over Silver Creek is a steel culvert carrying Crampton Road over Silver Creek in Hillsdale County, Michigan. It was built in 1982, so it is 43 years old, younger than the Michigan average of 48.3 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.

It carries about 21 vehicles a day, projected to reach 34 by 2038. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCrampton Road
CrossesSilver Creek
Location0.4 MI N of Camden Road
RouteCounty Highway 0
CountyHillsdale County
StateMichigan
Coordinates41.75869, -84.57274
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating20.7 US tons
Inventory rating12.5 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length20 ft (6.1 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (2014)
Projected traffic34 by 2038
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Crampton Road over Silver Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is Crampton Road 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 November 2024.

How much traffic does Crampton Road over Silver Creek carry?

About 21 vehicles per day (2014 count).

How long is Crampton Road over Silver Creek?

The structure is 20 ft (6.1 m) long with a longest span of 9 ft (2.7 m).

Who owns Crampton Road over Silver Creek?

It is owned by the County Highway Agency.