US Bridges

M-13 over Birch Run Outlet Drn

Good

Saginaw County, Michigan · 7.1 MI S of M-46 · Structure no. 000000000009080

Built
2016
9 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
125 ft
1 main span
Daily traffic
6,275
2012 count
Owner
State
State Highway Agency

About this bridge

M-13 over Birch Run Outlet Drn is a prestressed concrete stringer/multi-beam or girder carrying M-13 over Birch Run Outlet Drn in Saginaw County, Michigan. It was built in 2016, so it is 9 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 6,275 vehicles a day, roughly 6% of them trucks, projected to reach 7,000 by 2034. The structure is 125 ft (38.1 m) long and 46 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM-13
CrossesBirch Run Outlet Drn
Location7.1 MI S of M-46
RouteState Highway 13
CountySaginaw County
StateMichigan
Coordinates43.30966, -83.95328
Functional classRural Minor Arterial

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.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating39.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length125 ft (38.1 m)
Longest span121 ft (37 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,275 (2012)
Projected traffic7,000 by 2034
Trucks6%
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

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-13 over Birch Run Outlet Drn built?

It was built in 2016, making it 9 years old in 2025.

What condition is M-13 over Birch Run Outlet Drn 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 July 2023.

How much traffic does M-13 over Birch Run Outlet Drn carry?

About 6,275 vehicles per day (2012 count), of which roughly 6% are trucks.

How long is M-13 over Birch Run Outlet Drn?

The structure is 125 ft (38.1 m) long with a longest span of 121 ft (37 m) and a deck 46 ft wide.

Who owns M-13 over Birch Run Outlet Drn?

It is owned by the State Highway Agency.