US Bridges

M-123 over Murphy Creek

Good

Luce County, Michigan · 9.8 MI N of Newberry · Structure no. 000000000005901

Built
2010
15 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
30 ft
1 main span
Daily traffic
890
2011 count
Owner
State
State Highway Agency

About this bridge

M-123 over Murphy Creek is a concrete culvert carrying M-123 over Murphy Creek in Luce County, Michigan. It was built in 2010, so it is 15 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 890 vehicles a day, roughly 5% of them trucks, projected to reach 1,030 by 2031. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 92 mi (148 km).

Location

Open in Google Maps
CarriesM-123
CrossesMurphy Creek
Location9.8 MI N of Newberry
RouteState Highway 123
CountyLuce County
StateMichigan
Coordinates46.4702, -85.42961
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating81.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic890 (2011)
Projected traffic1,030 by 2031
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed92 mi (148 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 M-123 over Murphy Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is M-123 over Murphy Creek 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 M-123 over Murphy Creek carry?

About 890 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is M-123 over Murphy Creek?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m).

Who owns M-123 over Murphy Creek?

It is owned by the State Highway Agency.