US Bridges

M-29 over Beaubien Creek

Fair

St. Clair County, Michigan · 3 MI SE Fair Haven · Structure no. 000000000009969

Built
1986
39 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
49 ft
1 main span
Daily traffic
11,980
2007 count
Owner
State
State Highway Agency

About this bridge

M-29 over Beaubien Creek is a prestressed concrete box beam or girders - multiple carrying M-29 over Beaubien Creek in St. Clair County, Michigan. It was built in 1986, so it is 39 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 5 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 11,980 vehicles a day, roughly 2% of them trucks, projected to reach 15,817 by 2018. The structure is 49 ft (15 m) long and 41 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesM-29
CrossesBeaubien Creek
Location3 MI SE Fair Haven
RouteState Highway 29
CountySt. Clair County
StateMichigan
Coordinates42.65983, -82.61961
Functional classUrban Minor Arterial

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.
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating90.7 US tons
Inventory rating52.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length49 ft (15 m)
Longest span49 ft (15 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,980 (2007)
Projected traffic15,817 by 2018
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 M-29 over Beaubien Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is M-29 over Beaubien 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 March 2023.

How much traffic does M-29 over Beaubien Creek carry?

About 11,980 vehicles per day (2007 count), of which roughly 2% are trucks.

How long is M-29 over Beaubien Creek?

The structure is 49 ft (15 m) long with a longest span of 49 ft (15 m) and a deck 41 ft wide.

Who owns M-29 over Beaubien Creek?

It is owned by the State Highway Agency.