US Bridges

US-31 over Tonawanda Creek

Fair

Grand Traverse County, Michigan · 0.9 MI E of M-137 · Structure no. 000000000003047

Built
1927
98 years old, rebuilt 1992
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
15,029
2007 count
Owner
State
State Highway Agency

About this bridge

US-31 over Tonawanda Creek is a prestressed concrete box beam or girders - multiple carrying US-31 over Tonawanda Creek in Grand Traverse County, Michigan. It was built in 1927 and reconstructed in 1992, so it is 98 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 15,029 vehicles a day, roughly 3% of them trucks, projected to reach 20,955 by 2018. The structure is 36 ft (11 m) long and 51 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesUS-31
CrossesTonawanda Creek
Location0.9 MI E of M-137
RouteU.S. Route 31
Coordinates44.65855, -85.74995
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating90.4 US tons
Inventory rating53.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length36 ft (11 m)
Longest span34 ft (10.4 m)
Deck width51 ft (15.6 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,029 (2007)
Projected traffic20,955 by 2018
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US-31 over Tonawanda Creek built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1992.

What condition is US-31 over Tonawanda 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 July 2024.

How much traffic does US-31 over Tonawanda Creek carry?

About 15,029 vehicles per day (2007 count), of which roughly 3% are trucks.

How long is US-31 over Tonawanda Creek?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 51 ft wide.

Who owns US-31 over Tonawanda Creek?

It is owned by the State Highway Agency.