US Bridges

Munson HWY over Blanchard Jt County Drn

Fair

Lenawee County, Michigan · 0.25 MI North of Mulberry · Structure no. 000000000005579

Built
1994
31 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
43 ft
1 main span
Daily traffic
267
2010 count
Owner
County
County Highway Agency

About this bridge

Munson HWY over Blanchard Jt County Drn is a concrete culvert carrying Munson HWY over Blanchard Jt County Drn in Lenawee County, Michigan. It was built in 1994, so it is 31 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 267 vehicles a day, roughly 2% of them trucks, projected to reach 500 by 2031. The structure is 43 ft (13.2 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesMunson HWY
CrossesBlanchard Jt County Drn
Location0.25 MI North of Mulberry
RouteCounty Highway 0
CountyLenawee County
StateMichigan
Coordinates41.74003, -84.32861
Functional classRural Minor Collector

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length43 ft (13.2 m)
Longest span40 ft (12.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic267 (2010)
Projected traffic500 by 2031
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Munson HWY over Blanchard Jt County Drn built?

It was built in 1994, making it 31 years old in 2025.

What condition is Munson HWY over Blanchard Jt County Drn 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 May 2024.

How much traffic does Munson HWY over Blanchard Jt County Drn carry?

About 267 vehicles per day (2010 count), of which roughly 2% are trucks.

How long is Munson HWY over Blanchard Jt County Drn?

The structure is 43 ft (13.2 m) long with a longest span of 40 ft (12.2 m).

Who owns Munson HWY over Blanchard Jt County Drn?

It is owned by the County Highway Agency.