US Bridges

Green Road over Unnamed Creek

FairPosted for load

St. Clair County, Michigan · Sec 16 Wales Twp · Structure no. 000000000010233

Built
1932
93 years old, rebuilt 1970
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
126
1994 count
Owner
County
County Highway Agency

About this bridge

Green Road over Unnamed Creek is a prestressed concrete box beam or girders - multiple carrying Green Road over Unnamed Creek in St. Clair County, Michigan. It was built in 1932 and reconstructed in 1970, so it is 93 years old, older 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 126 vehicles a day, roughly 3% of them trucks, projected to reach 225 by 2014. The structure is 33 ft (10.1 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesGreen Road
CrossesUnnamed Creek
LocationSec 16 Wales Twp
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates42.95166, -82.69402
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating32.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length33 ft (10.1 m)
Longest span30 ft (9 m)
Deck width18 ft (5.6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic126 (1994)
Projected traffic225 by 2014
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Green Road over Unnamed Creek built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1970.

What condition is Green Road over Unnamed Creek 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 November 2023.

How much traffic does Green Road over Unnamed Creek carry?

About 126 vehicles per day (1994 count), of which roughly 3% are trucks.

How long is Green Road over Unnamed Creek?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9 m) and a deck 18 ft wide.

Who owns Green Road over Unnamed Creek?

It is owned by the County Highway Agency.