US Bridges

Cranson Road over Prairie River

Fair

Branch County, Michigan · Bethel Twp Sec 29-32 · Structure no. 000000000001104

Built
2006
19 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
49 ft
1 main span
Daily traffic
372
2006 count
Owner
County
County Highway Agency

About this bridge

Cranson Road over Prairie River is a concrete culvert carrying Cranson Road over Prairie River in Branch County, Michigan. It was built in 2006, so it is 19 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 372 vehicles a day, roughly 6% of them trucks, projected to reach 501 by 2026. The structure is 49 ft (15 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCranson Road
CrossesPrairie River
LocationBethel Twp Sec 29-32
RouteCounty Highway 1220
Coordinates41.8255, -85.1553
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.2 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length49 ft (15 m)
Longest span45 ft (13.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic372 (2006)
Projected traffic501 by 2026
Trucks6%
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 Cranson Road over Prairie River built?

It was built in 2006, making it 19 years old in 2025.

What condition is Cranson Road over Prairie River 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 October 2024.

How much traffic does Cranson Road over Prairie River carry?

About 372 vehicles per day (2006 count), of which roughly 6% are trucks.

How long is Cranson Road over Prairie River?

The structure is 49 ft (15 m) long with a longest span of 45 ft (13.8 m).

Who owns Cranson Road over Prairie River?

It is owned by the County Highway Agency.