US Bridges

Snow Prairie Road over South Br Swan Creek

Fair

Branch County, Michigan · Bethel Twp Sec 3-4 · Structure no. 000000000001129

Built
1984
41 years old
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
23 ft
2 main spans
Daily traffic
471
2004 count
Owner
County
County Highway Agency

About this bridge

Snow Prairie Road over South Br Swan Creek is a steel culvert carrying Snow Prairie Road over South Br Swan Creek in Branch County, Michigan. It was built in 1984, so it is 41 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 471 vehicles a day, roughly 4% of them trucks, projected to reach 541 by 2024. The structure is 23 ft (7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSnow Prairie Road
CrossesSouth Br Swan Creek
LocationBethel Twp Sec 3-4
Coordinates41.8981, -85.11717
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic471 (2004)
Projected traffic541 by 2024
Trucks4%
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 Snow Prairie Road over South Br Swan Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Snow Prairie Road over South Br Swan 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 October 2024.

How much traffic does Snow Prairie Road over South Br Swan Creek carry?

About 471 vehicles per day (2004 count), of which roughly 4% are trucks.

How long is Snow Prairie Road over South Br Swan Creek?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns Snow Prairie Road over South Br Swan Creek?

It is owned by the County Highway Agency.