US Bridges

Montgomery Road over Silver Creek

Fair

Hillsdale County, Michigan · 0.4 Mile W of Crampton RD · Structure no. 000000000003292

Built
1950
75 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
446
2013 count
Owner
County
County Highway Agency

About this bridge

Montgomery Road over Silver Creek is a concrete slab carrying Montgomery Road over Silver Creek in Hillsdale County, Michigan. It was built in 1950, so it is 75 years old, older 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 5 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 446 vehicles a day, projected to reach 732 by 2038. The structure is 23 ft (7 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMontgomery Road
CrossesSilver Creek
Location0.4 Mile W of Crampton RD
RouteCounty Highway 3026
CountyHillsdale County
StateMichigan
Coordinates41.78175, -84.57994
Functional classRural Major 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
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 alignment6: Equal to present minimum criteria
Operating rating95.3 US tons
Inventory rating57.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic446 (2013)
Projected traffic732 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$100,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Montgomery Road over Silver Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Montgomery 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 Montgomery Road over Silver Creek carry?

About 446 vehicles per day (2013 count).

How long is Montgomery Road over Silver Creek?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 28 ft wide.

Who owns Montgomery Road over Silver Creek?

It is owned by the County Highway Agency.