US Bridges

Sheridan Road over Iron Creek

Poor

Washtenaw County, Michigan · Bridgewater Twp Sec 30 · Structure no. 000000000011044

Built
1960
65 years old, rebuilt 1999
Condition
Poor
inspected April 2024
Type
Slab
Wood or Timber
Length
26 ft
1 main span
Daily traffic
138
2005 count
Owner
County
County Highway Agency

About this bridge

Sheridan Road over Iron Creek is a wood or timber slab carrying Sheridan Road over Iron Creek in Washtenaw County, Michigan. It was built in 1960 and reconstructed in 1999, so it is 65 years old, older 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 2 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 138 vehicles a day, projected to reach 249 by 2025. The structure is 26 ft (7.9 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSheridan Road
CrossesIron Creek
LocationBridgewater Twp Sec 30
RouteCounty Highway 0
CountyWashtenaw County
StateMichigan
Coordinates42.09141, -84.00881
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.
Substructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; extensive scour has occurred
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating63.6 US tons
Inventory rating44.3 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 10
Structure length26 ft (7.9 m)
Longest span26 ft (7.9 m)
Deck width20 ft (6 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic138 (2005)
Projected traffic249 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Sheridan Road over Iron Creek built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1999.

What condition is Sheridan Road over Iron 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 April 2024.

How much traffic does Sheridan Road over Iron Creek carry?

About 138 vehicles per day (2005 count).

How long is Sheridan Road over Iron Creek?

The structure is 26 ft (7.9 m) long with a longest span of 26 ft (7.9 m) and a deck 20 ft wide.

Who owns Sheridan Road over Iron Creek?

It is owned by the County Highway Agency.