US Bridges

Phelps Road over Swartout Drain

Fair

St. Clair County, Michigan · Pc 198-309 Clay Twp · Structure no. 000000000010145

Built
1996
29 years old
Condition
Fair
inspected April 2024
Type
Culvert
Steel
Length
20 ft
2 main spans
Daily traffic
465
1997 count
Owner
County
County Highway Agency

About this bridge

Phelps Road over Swartout Drain is a steel culvert carrying Phelps Road over Swartout Drain in St. Clair County, Michigan. It was built in 1996, so it is 29 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 465 vehicles a day, roughly 2% of them trucks, projected to reach 1,230 by 2017. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPhelps Road
CrossesSwartout Drain
LocationPc 198-309 Clay Twp
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates42.6459, -82.5892
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating103.2 US tons
Inventory rating61.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic465 (1997)
Projected traffic1,230 by 2017
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Phelps Road over Swartout Drain built?

It was built in 1996, making it 29 years old in 2025.

What condition is Phelps Road over Swartout Drain 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 April 2024.

How much traffic does Phelps Road over Swartout Drain carry?

About 465 vehicles per day (1997 count), of which roughly 2% are trucks.

How long is Phelps Road over Swartout Drain?

The structure is 20 ft (6.1 m) long with a longest span of 7 ft (2.1 m).

Who owns Phelps Road over Swartout Drain?

It is owned by the County Highway Agency.