US Bridges

M-20 EB over Tittabawassee River

Good

Midland County, Michigan · In Midland · Structure no. 000000000013963

Built
2019
6 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
726 ft
4 main spans
Daily traffic
21,358
2015 count
Owner
State
State Highway Agency

About this bridge

M-20 EB over Tittabawassee River is a steel continuous stringer/multi-beam or girder carrying M-20 EB over Tittabawassee River in Midland County, Michigan. It was built in 2019, so it is 6 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 21,358 vehicles a day, roughly 3% of them trucks, projected to reach 29,217 by 2037. The structure is 726 ft (221.3 m) long and 45 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesM-20 EB
CrossesTittabawassee River
LocationIn Midland
RouteState Highway 20
CountyMidland County
StateMichigan
Coordinates43.61366, -84.25002
Functional classUrban Other Principal 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.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadGreater than HL 93
Structure length726 ft (221.3 m)
Longest span190 ft (57.9 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,358 (2015)
Projected traffic29,217 by 2037
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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-20 EB over Tittabawassee River built?

It was built in 2019, making it 6 years old in 2025.

What condition is M-20 EB over Tittabawassee River 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 November 2024.

How much traffic does M-20 EB over Tittabawassee River carry?

About 21,358 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is M-20 EB over Tittabawassee River?

The structure is 726 ft (221.3 m) long with a longest span of 190 ft (57.9 m) and a deck 45 ft wide.

Who owns M-20 EB over Tittabawassee River?

It is owned by the State Highway Agency.