US Bridges

Ruth Road over Black River I/C Drain

Fair

Sanilac County, Michigan · Sec 29-30 Bridgehampton · Structure no. 000000000009551

Built
1952
73 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
135 ft
3 main spans
Daily traffic
3,325
2021 count
Owner
County
County Highway Agency

About this bridge

Ruth Road over Black River I/C Drain is a steel stringer/multi-beam or girder carrying Ruth Road over Black River I/C Drain in Sanilac County, Michigan. It was built in 1952, so it is 73 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 3,325 vehicles a day, roughly 10% of them trucks, projected to reach 6,005 by 2041. The structure is 135 ft (41.1 m) long and 44 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesRuth Road
CrossesBlack River I/C Drain
LocationSec 29-30 Bridgehampton
RouteCounty Highway 7467
CountySanilac County
StateMichigan
Coordinates43.44604, -82.73209
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating38.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length135 ft (41.1 m)
Longest span45 ft (13.7 m)
Deck width44 ft (13.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,325 (2021)
Projected traffic6,005 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$444,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ruth Road over Black River I/C Drain built?

It was built in 1952, making it 73 years old in 2025.

What condition is Ruth Road over Black River I/C Drain 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 June 2023.

How much traffic does Ruth Road over Black River I/C Drain carry?

About 3,325 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Ruth Road over Black River I/C Drain?

The structure is 135 ft (41.1 m) long with a longest span of 45 ft (13.7 m) and a deck 44 ft wide.

Who owns Ruth Road over Black River I/C Drain?

It is owned by the County Highway Agency.