US Bridges

Mcmillan Road over Moore Creek

Poor

Huron County, Michigan · Sec 33-34 Hume Twp · Structure no. 000000000003610

Built
1920
105 years old, rebuilt 1987
Condition
Poor
inspected August 2024
Type
Tee Beam
Prestressed Concrete
Length
23 ft
1 main span
Daily traffic
180
2009 count
Owner
County
County Highway Agency

About this bridge

Mcmillan Road over Moore Creek is a prestressed concrete tee beam carrying Mcmillan Road over Moore Creek in Huron County, Michigan. It was built in 1920 and reconstructed in 1987, so it is 105 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 180 vehicles a day, roughly 1% of them trucks, projected to reach 325 by 2029. The structure is 23 ft (7 m) long and 28 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesMcmillan Road
CrossesMoore Creek
LocationSec 33-34 Hume Twp
RouteCounty Highway 0
CountyHuron County
StateMichigan
Coordinates43.93768, -83.06483
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: 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 rating29.7 US tons
Inventory rating22.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2009)
Projected traffic325 by 2029
Trucks1%
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 Mcmillan Road over Moore Creek built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1987.

What condition is Mcmillan Road over Moore Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Mcmillan Road over Moore Creek carry?

About 180 vehicles per day (2009 count), of which roughly 1% are trucks.

How long is Mcmillan Road over Moore Creek?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 28 ft wide.

Who owns Mcmillan Road over Moore Creek?

It is owned by the County Highway Agency.