US Bridges

Dolph RD over Muskegon River

Good

Missaukee County, Michigan · Section 11 T21N R5W · Structure no. 000000000007055

Built
2023
2 years old
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Single or Spread
Steel
Length
90 ft
1 main span
Daily traffic
78
2007 count
Owner
County
County Highway Agency

About this bridge

Dolph RD over Muskegon River is a steel box beam or girders - single or spread carrying Dolph RD over Muskegon River in Missaukee County, Michigan. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 78 vehicles a day, roughly 2% of them trucks, projected to reach 140 by 2027. The structure is 90 ft (27.4 m) long and 18 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesDolph RD
CrossesMuskegon River
LocationSection 11 T21N R5W
RouteCounty Highway 0
CountyMissaukee County
StateMichigan
Coordinates44.22526, -84.87521
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.5 US tons
Inventory rating47.8 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length90 ft (27.4 m)
Longest span86 ft (26.2 m)
Deck width18 ft (5.4 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic78 (2007)
Projected traffic140 by 2027
Trucks2%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$565,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Dolph RD over Muskegon River built?

It was built in 2023, making it 2 years old in 2025.

What condition is Dolph RD over Muskegon 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 2023.

How much traffic does Dolph RD over Muskegon River carry?

About 78 vehicles per day (2007 count), of which roughly 2% are trucks.

How long is Dolph RD over Muskegon River?

The structure is 90 ft (27.4 m) long with a longest span of 86 ft (26.2 m) and a deck 18 ft wide.

Who owns Dolph RD over Muskegon River?

It is owned by the County Highway Agency.