US Bridges

Sterling Road over S. Br. Mill Creek Drain

Fair

St. Clair County, Michigan · Sec. 23 Lynn Twp. · Structure no. 000000000010083

Built
1985
40 years old, rebuilt 2014
Condition
Fair
inspected October 2024
Type
Slab
Wood or Timber
Length
84 ft
3 main spans
Daily traffic
1,110
1994 count
Owner
County
County Highway Agency

About this bridge

Sterling Road over S. Br. Mill Creek Drain is a wood or timber slab carrying Sterling Road over S. Br. Mill Creek Drain in St. Clair County, Michigan. It was built in 1985 and reconstructed in 2014, so it is 40 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 1,110 vehicles a day, roughly 7% of them trucks, projected to reach 1,410 by 2014. The structure is 84 ft (25.6 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSterling Road
CrossesS. Br. Mill Creek Drain
LocationSec. 23 Lynn Twp.
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates43.10238, -82.90866
Functional classRural Major 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating97.9 US tons
Inventory rating75.7 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20 + Mod
Structure length84 ft (25.6 m)
Longest span28 ft (8.5 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,110 (1994)
Projected traffic1,410 by 2014
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Sterling Road over S. Br. Mill Creek Drain built?

It was built in 1985, making it 40 years old in 2025. It was reconstructed in 2014.

What condition is Sterling Road over S. Br. Mill Creek 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 October 2024.

How much traffic does Sterling Road over S. Br. Mill Creek Drain carry?

About 1,110 vehicles per day (1994 count), of which roughly 7% are trucks.

How long is Sterling Road over S. Br. Mill Creek Drain?

The structure is 84 ft (25.6 m) long with a longest span of 28 ft (8.5 m) and a deck 42 ft wide.

Who owns Sterling Road over S. Br. Mill Creek Drain?

It is owned by the County Highway Agency.