US Bridges

Gage RD over Swartz Creek

Fair

Oakland County, Michigan · South of Kurtz · Structure no. 000000000008199

Built
1979
46 years old
Condition
Fair
inspected June 2024
Type
Culvert
Steel
Length
27 ft
2 main spans
Daily traffic
304
1997 count
Owner
County
County Highway Agency

About this bridge

Gage RD over Swartz Creek is a steel culvert carrying Gage RD over Swartz Creek in Oakland County, Michigan. It was built in 1979, so it is 46 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 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 304 vehicles a day, roughly 5% of them trucks, projected to reach 500 by 2017. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesGage RD
CrossesSwartz Creek
LocationSouth of Kurtz
RouteCounty Highway 0
CountyOakland County
StateMichigan
Coordinates42.84171, -83.68858
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.9 US tons
Inventory rating63.6 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length27 ft (8.2 m)
Longest span12 ft (3.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic304 (1997)
Projected traffic500 by 2017
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Gage RD over Swartz Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is Gage RD over Swartz 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 2024.

How much traffic does Gage RD over Swartz Creek carry?

About 304 vehicles per day (1997 count), of which roughly 5% are trucks.

How long is Gage RD over Swartz Creek?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.6 m).

Who owns Gage RD over Swartz Creek?

It is owned by the County Highway Agency.