US Bridges

M-34 over Bear Creek

Fair

Lenawee County, Michigan · 1.9 Miles SW of Clayton · Structure no. 000000000005510

Built
2005
20 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
26 ft
1 main span
Daily traffic
4,061
2007 count
Owner
State
State Highway Agency

About this bridge

M-34 over Bear Creek is a concrete culvert carrying M-34 over Bear Creek in Lenawee County, Michigan. It was built in 2005, so it is 20 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 4,061 vehicles a day, roughly 8% of them trucks, projected to reach 5,532 by 2018. The structure is 26 ft (7.9 m) long.

CarriesM-34
CrossesBear Creek
Location1.9 Miles SW of Clayton
RouteState Highway 34
Coordinates41.85667, -84.26382
Functional classRural Minor Arterial

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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,061 (2007)
Projected traffic5,532 by 2018
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 M-34 over Bear Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is M-34 over Bear 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 M-34 over Bear Creek carry?

About 4,061 vehicles per day (2007 count), of which roughly 8% are trucks.

How long is M-34 over Bear Creek?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m).

Who owns M-34 over Bear Creek?

It is owned by the State Highway Agency.