US Bridges

Strasburg RD over Lockwood Drain

Fair

Monroe County, Michigan · 0.1 MI N of S Otter Ck RD · Structure no. 000000000007239

Built
1935
90 years old, rebuilt 1995
Condition
Fair
inspected August 2024
Type
Slab
Wood or Timber
Length
30 ft
1 main span
Daily traffic
937
2010 count
Owner
County
County Highway Agency

About this bridge

Strasburg RD over Lockwood Drain is a wood or timber slab carrying Strasburg RD over Lockwood Drain in Monroe County, Michigan. It was built in 1935 and reconstructed in 1995, so it is 90 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 937 vehicles a day, roughly 5% of them trucks, projected to reach 1,200 by 2030. The structure is 30 ft (9.1 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesStrasburg RD
CrossesLockwood Drain
Location0.1 MI N of S Otter Ck RD
RouteCounty Highway 0
Coordinates41.87533, -83.51286
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71.8 US tons
Inventory rating49.3 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic937 (2010)
Projected traffic1,200 by 2030
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Strasburg RD over Lockwood Drain built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1995.

What condition is Strasburg RD over Lockwood 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 August 2024.

How much traffic does Strasburg RD over Lockwood Drain carry?

About 937 vehicles per day (2010 count), of which roughly 5% are trucks.

How long is Strasburg RD over Lockwood Drain?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 30 ft wide.

Who owns Strasburg RD over Lockwood Drain?

It is owned by the County Highway Agency.