US Bridges

Dickenson Road over Onion Creek

Poor

Midland County, Michigan · 0.3 S. of Salt River Road · Structure no. 000000000006969

Built
1991
34 years old
Condition
Poor
inspected September 2024
Type
Slab
Wood or Timber
Length
62 ft
3 main spans
Daily traffic
45
1999 count
Owner
County
County Highway Agency

About this bridge

Dickenson Road over Onion Creek is a wood or timber slab carrying Dickenson Road over Onion Creek in Midland County, Michigan. It was built in 1991, so it is 34 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 45 vehicles a day, projected to reach 67 by 2019. The structure is 62 ft (18.9 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesDickenson Road
CrossesOnion Creek
Location0.3 S. of Salt River Road
RouteCounty Highway 0
CountyMidland County
StateMichigan
Coordinates43.57096, -84.59815
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span26 ft (7.9 m)
Deck width27 ft (8.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (1999)
Projected traffic67 by 2019
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Dickenson Road over Onion Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Dickenson Road over Onion Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Dickenson Road over Onion Creek carry?

About 45 vehicles per day (1999 count).

How long is Dickenson Road over Onion Creek?

The structure is 62 ft (18.9 m) long with a longest span of 26 ft (7.9 m) and a deck 27 ft wide.

Who owns Dickenson Road over Onion Creek?

It is owned by the County Highway Agency.