US Bridges

I-75 SB over N Branch Pine River

Poor

Arenac County, Michigan · 0.1 MI S of MI Pt 193 · Structure no. 000000000000416

Built
1968
57 years old
Condition
Poor
inspected July 2024
Type
Culvert
Steel
Length
28 ft
2 main spans
Daily traffic
7,138
2007 count
Owner
State
State Highway Agency

About this bridge

I-75 SB over N Branch Pine River is a steel culvert carrying I-75 SB over N Branch Pine River in Arenac County, Michigan. It was built in 1968, so it is 57 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 4 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.

It carries about 7,138 vehicles a day, roughly 11% of them trucks, projected to reach 9,916 by 2018. The structure is 28 ft (8.6 m) long. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesI-75 SB
CrossesN Branch Pine River
Location0.1 MI S of MI Pt 193
RouteInterstate 75
CountyArenac County
StateMichigan
Coordinates44.01251, -84.04126
Functional classRural Principal Arterial - Interstate

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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length28 ft (8.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,138 (2007)
Projected traffic9,916 by 2018
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-75 SB over N Branch Pine River built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-75 SB over N Branch Pine 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 I-75 SB over N Branch Pine River carry?

About 7,138 vehicles per day (2007 count), of which roughly 11% are trucks.

How long is I-75 SB over N Branch Pine River?

The structure is 28 ft (8.6 m) long with a longest span of 12 ft (3.7 m).

Who owns I-75 SB over N Branch Pine River?

It is owned by the State Highway Agency.