US Bridges

Shield RD over Mill Creek

Good

Washtenaw County, Michigan · SC10 Twp Sec 7 · Structure no. 000000000011027

Built
2017
8 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
87 ft
1 main span
Daily traffic
3,403
2017 count
Owner
County
County Highway Agency

About this bridge

Shield RD over Mill Creek is a prestressed concrete stringer/multi-beam or girder carrying Shield RD over Mill Creek in Washtenaw County, Michigan. It was built in 2017, so it is 8 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,403 vehicles a day, roughly 5% of them trucks, projected to reach 3,686 by 2037. The structure is 87 ft (26.4 m) long and 41 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesShield RD
CrossesMill Creek
LocationSC10 Twp Sec 7
RouteCounty Highway 0
CountyWashtenaw County
StateMichigan
Coordinates42.32516, -83.89234
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.3 US tons
Inventory rating61.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length87 ft (26.4 m)
Longest span84 ft (25.6 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,403 (2017)
Projected traffic3,686 by 2037
Trucks5%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$320,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Shield RD over Mill Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Shield RD over Mill Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does Shield RD over Mill Creek carry?

About 3,403 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Shield RD over Mill Creek?

The structure is 87 ft (26.4 m) long with a longest span of 84 ft (25.6 m) and a deck 41 ft wide.

Who owns Shield RD over Mill Creek?

It is owned by the County Highway Agency.