US Bridges

Muir Road over Weston Drain

Good

Lapeer County, Michigan · Sec. 6 Almont Twp. · Structure no. 000000000005395

Built
1983
42 years old
Condition
Good
inspected June 2023
Type
Slab
Wood or Timber
Length
36 ft
2 main spans
Daily traffic
270
2018 count
Owner
County
County Highway Agency

About this bridge

Muir Road over Weston Drain is a wood or timber slab carrying Muir Road over Weston Drain in Lapeer County, Michigan. It was built in 1983, so it is 42 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 270 vehicles a day, projected to reach 330 by 2038. The structure is 36 ft (10.9 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMuir Road
CrossesWeston Drain
LocationSec. 6 Almont Twp.
RouteCounty Highway 0
Coordinates42.9769, -83.0875
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 alignment6: Equal to present minimum criteria
Operating rating49.6 US tons
Inventory rating35.1 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 20
Structure length36 ft (10.9 m)
Longest span17 ft (5.1 m)
Deck width27 ft (8.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic270 (2018)
Projected traffic330 by 2038
Trucks0%
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 Muir Road over Weston Drain built?

It was built in 1983, making it 42 years old in 2025.

What condition is Muir Road over Weston Drain 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 June 2023.

How much traffic does Muir Road over Weston Drain carry?

About 270 vehicles per day (2018 count).

How long is Muir Road over Weston Drain?

The structure is 36 ft (10.9 m) long with a longest span of 17 ft (5.1 m) and a deck 27 ft wide.

Who owns Muir Road over Weston Drain?

It is owned by the County Highway Agency.