US Bridges

CO RD 611 over Boardman River

Good

Grand Traverse County, Michigan · 3.7M N &.8M E of Kingsley · Structure no. 000000000003069

Built
1947
78 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
70 ft
1 main span
Daily traffic
10,294
2019 count
Owner
County
County Highway Agency

About this bridge

CO RD 611 over Boardman River is a steel stringer/multi-beam or girder carrying CO RD 611 over Boardman River in Grand Traverse County, Michigan. It was built in 1947, so it is 78 years old, older 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 10,294 vehicles a day, roughly 12% of them trucks, projected to reach 12,000 by 2030. The structure is 70 ft (21.3 m) long and 31 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

CarriesCO RD 611
CrossesBoardman River
Location3.7M N &.8M E of Kingsley
RouteCounty Highway 2849
Coordinates44.63707, -85.51815
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating100.8 US tons
Inventory rating77.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length70 ft (21.3 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,294 (2019)
Projected traffic12,000 by 2030
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$46,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD 611 over Boardman River built?

It was built in 1947, making it 78 years old in 2025.

What condition is CO RD 611 over Boardman 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 August 2023.

How much traffic does CO RD 611 over Boardman River carry?

About 10,294 vehicles per day (2019 count), of which roughly 12% are trucks.

How long is CO RD 611 over Boardman River?

The structure is 70 ft (21.3 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns CO RD 611 over Boardman River?

It is owned by the County Highway Agency.