US Bridges

Scottville Road over Swan Creek

Fair

Mason County, Michigan · 4.5 MI S of Scottville · Structure no. 000000000006662

Built
1900
125 years old, rebuilt 1995
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
2,200
1997 count
Owner
County
County Highway Agency

About this bridge

Scottville Road over Swan Creek is a steel stringer/multi-beam or girder carrying Scottville Road over Swan Creek in Mason County, Michigan. It was built in 1900 and reconstructed in 1995, so it is 125 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 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 2,200 vehicles a day, roughly 12% of them trucks, projected to reach 3,000 by 2017. The structure is 25 ft (7.6 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesScottville Road
CrossesSwan Creek
Location4.5 MI S of Scottville
RouteCounty Highway 5349
CountyMason County
StateMichigan
Coordinates43.88695, -86.27857
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20 + Mod
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width32 ft (9.7 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (1997)
Projected traffic3,000 by 2017
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Scottville Road over Swan Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1995.

What condition is Scottville Road over 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 August 2024.

How much traffic does Scottville Road over Swan Creek carry?

About 2,200 vehicles per day (1997 count), of which roughly 12% are trucks.

How long is Scottville Road over Swan Creek?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 32 ft wide.

Who owns Scottville Road over Swan Creek?

It is owned by the County Highway Agency.