US Bridges

Koepfgen Road over Center B Drain

Fair

Tuscola County, Michigan · Sec 32-33 Elkland Twp · Structure no. 000000000010573

Built
1979
46 years old
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
30 ft
2 main spans
Daily traffic
440
2009 count
Owner
County
County Highway Agency

About this bridge

Koepfgen Road over Center B Drain is a steel culvert carrying Koepfgen Road over Center B Drain in Tuscola 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 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 440 vehicles a day, projected to reach 790 by 2029. The structure is 30 ft (9.2 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesKoepfgen Road
CrossesCenter B Drain
LocationSec 32-33 Elkland Twp
RouteCounty Highway 0
CountyTuscola County
StateMichigan
Coordinates43.59163, -83.19409
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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating51.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 20
Structure length30 ft (9.2 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic440 (2009)
Projected traffic790 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 Koepfgen Road over Center B Drain built?

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

What condition is Koepfgen Road over Center B 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 October 2024.

How much traffic does Koepfgen Road over Center B Drain carry?

About 440 vehicles per day (2009 count).

How long is Koepfgen Road over Center B Drain?

The structure is 30 ft (9.2 m) long with a longest span of 14 ft (4.3 m).

Who owns Koepfgen Road over Center B Drain?

It is owned by the County Highway Agency.