US Bridges

Brown Road over West Branch Drain

Fair

Huron County, Michigan · Sec 27-28 Winsor Twp · Structure no. 000000000012647

Built
1979
46 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
29 ft
1 main span
Daily traffic
150
2009 count
Owner
County
County Highway Agency

About this bridge

Brown Road over West Branch Drain is a steel stringer/multi-beam or girder carrying Brown Road over West Branch Drain in Huron 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 150 vehicles a day, roughly 1% of them trucks, projected to reach 270 by 2029. The structure is 29 ft (8.8 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesBrown Road
CrossesWest Branch Drain
LocationSec 27-28 Winsor Twp
RouteCounty Highway 0
Coordinates43.79142, -83.29825
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating63.2 US tons
Inventory rating37.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length29 ft (8.8 m)
Longest span20 ft (6.1 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2009)
Projected traffic270 by 2029
Trucks1%
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 Brown Road over West Branch Drain built?

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

What condition is Brown Road over West Branch 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 September 2023.

How much traffic does Brown Road over West Branch Drain carry?

About 150 vehicles per day (2009 count), of which roughly 1% are trucks.

How long is Brown Road over West Branch Drain?

The structure is 29 ft (8.8 m) long with a longest span of 20 ft (6.1 m) and a deck 24 ft wide.

Who owns Brown Road over West Branch Drain?

It is owned by the County Highway Agency.