US Bridges

Mayer Road over Rattle Run Creek

Fair

St. Clair County, Michigan · Sec 18 ST Clair Twp · Structure no. 000000000010102

Built
1930
95 years old, rebuilt 1976
Condition
Fair
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
300
1994 count
Owner
County
County Highway Agency

About this bridge

Mayer Road over Rattle Run Creek is a prestressed concrete box beam or girders - multiple carrying Mayer Road over Rattle Run Creek in St. Clair County, Michigan. It was built in 1930 and reconstructed in 1976, so it is 95 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 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 300 vehicles a day, roughly 3% of them trucks, projected to reach 540 by 2014. The structure is 38 ft (11.6 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMayer Road
CrossesRattle Run Creek
LocationSec 18 ST Clair Twp
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates42.86985, -82.618
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating41.1 US tons
Inventory rating31.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length38 ft (11.6 m)
Longest span35 ft (10.7 m)
Deck width21 ft (6.4 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (1994)
Projected traffic540 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 Mayer Road over Rattle Run Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1976.

What condition is Mayer Road over Rattle Run 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 December 2023.

How much traffic does Mayer Road over Rattle Run Creek carry?

About 300 vehicles per day (1994 count), of which roughly 3% are trucks.

How long is Mayer Road over Rattle Run Creek?

The structure is 38 ft (11.6 m) long with a longest span of 35 ft (10.7 m) and a deck 21 ft wide.

Who owns Mayer Road over Rattle Run Creek?

It is owned by the County Highway Agency.