US Bridges

Swaffer Road over Perry Creek

Fair

Tuscola County, Michigan · Sec 33 Tuscola Twp · Structure no. 000000000010643

Built
1974
51 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Prestressed Concrete
Length
27 ft
1 main span
Daily traffic
170
2009 count
Owner
County
County Highway Agency

About this bridge

Swaffer Road over Perry Creek is a prestressed concrete tee beam carrying Swaffer Road over Perry Creek in Tuscola 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 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 170 vehicles a day, projected to reach 310 by 2029. The structure is 27 ft (8.2 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesSwaffer Road
CrossesPerry Creek
LocationSec 33 Tuscola Twp
RouteCounty Highway 0
CountyTuscola County
StateMichigan
Coordinates43.30692, -83.64455
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating59.3 US tons
Inventory rating35.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span25 ft (7.7 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2009)
Projected traffic310 by 2029
Trucks0%
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 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 Swaffer Road over Perry Creek built?

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

What condition is Swaffer Road over Perry 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 June 2023.

How much traffic does Swaffer Road over Perry Creek carry?

About 170 vehicles per day (2009 count).

How long is Swaffer Road over Perry Creek?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.7 m) and a deck 32 ft wide.

Who owns Swaffer Road over Perry Creek?

It is owned by the County Highway Agency.