US Bridges

Jad Road (old M41) over Carp River

PoorPosted for load

Marquette County, Michigan · 0.02 MI N of US-41 · Structure no. 000000000006596

Built
1946
79 years old
Condition
Poor
inspected July 2024
Type
Slab
Wood or Timber
Length
49 ft
3 main spans
Daily traffic
100
1994 count
Owner
County
County Highway Agency

About this bridge

Jad Road (old M41) over Carp River is a wood or timber slab carrying Jad Road (old M41) over Carp River in Marquette County, Michigan. It was built in 1946, so it is 79 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. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, projected to reach 100 by 2020. The structure is 49 ft (14.9 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesJad Road (old M41)
CrossesCarp River
Location0.02 MI N of US-41
RouteCounty Highway 0
CountyMarquette County
StateMichigan
Coordinates46.52418, -87.57594
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating19.3 US tons
Inventory rating14.7 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckOther
Main spans3
Design loadHS 20 + Mod
Structure length49 ft (14.9 m)
Longest span17 ft (5.1 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1994)
Projected traffic100 by 2020
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$49,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Jad Road (old M41) over Carp River built?

It was built in 1946, making it 79 years old in 2025.

What condition is Jad Road (old M41) over Carp River 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 July 2024.

How much traffic does Jad Road (old M41) over Carp River carry?

About 100 vehicles per day (1994 count).

How long is Jad Road (old M41) over Carp River?

The structure is 49 ft (14.9 m) long with a longest span of 17 ft (5.1 m) and a deck 43 ft wide.

Who owns Jad Road (old M41) over Carp River?

It is owned by the County Highway Agency.