US Bridges

Schomaker Road over Swan Creek

PoorPosted for load

Saginaw County, Michigan · 0.6 MI E of S Thomas Road · Structure no. 000000000009428

Built
1974
51 years old
Condition
Poor
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
164 ft
3 main spans
Daily traffic
298
2017 count
Owner
County
County Highway Agency

About this bridge

Schomaker Road over Swan Creek is a prestressed concrete box beam or girders - multiple carrying Schomaker Road over Swan Creek in Saginaw County, Michigan. It was built in 1974, so it is 51 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 298 vehicles a day, roughly 5% of them trucks, projected to reach 313 by 2027. The structure is 164 ft (50 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSchomaker Road
CrossesSwan Creek
Location0.6 MI E of S Thomas Road
RouteCounty Highway 0
Coordinates43.40117, -84.09931
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating23.6 US tons
Inventory rating13.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length164 ft (50 m)
Longest span56 ft (17 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic298 (2017)
Projected traffic313 by 2027
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Schomaker Road over Swan Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Schomaker Road over Swan Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Schomaker Road over Swan Creek carry?

About 298 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Schomaker Road over Swan Creek?

The structure is 164 ft (50 m) long with a longest span of 56 ft (17 m) and a deck 30 ft wide.

Who owns Schomaker Road over Swan Creek?

It is owned by the County Highway Agency.