US Bridges

US-23 over N Br Devil River

Fair

Alpena County, Michigan · 4.5 MI N of Alcona Col · Structure no. 000000000000332

Built
1933
92 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
31 ft
1 main span
Daily traffic
5,537
2007 count
Owner
State
State Highway Agency

About this bridge

US-23 over N Br Devil River is a concrete tee beam carrying US-23 over N Br Devil River in Alpena County, Michigan. It was built in 1933, so it is 92 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 5 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 5,537 vehicles a day, roughly 5% of them trucks, projected to reach 7,351 by 2018. The structure is 31 ft (9.4 m) long and 47 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesUS-23
CrossesN Br Devil River
Location4.5 MI N of Alcona Col
RouteU.S. Route 23
Coordinates44.92165, -83.43684
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating83.9 US tons
Inventory rating50.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length31 ft (9.4 m)
Longest span27 ft (8.3 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,537 (2007)
Projected traffic7,351 by 2018
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemYes

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 US-23 over N Br Devil River built?

It was built in 1933, making it 92 years old in 2025.

What condition is US-23 over N Br Devil River 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 May 2023.

How much traffic does US-23 over N Br Devil River carry?

About 5,537 vehicles per day (2007 count), of which roughly 5% are trucks.

How long is US-23 over N Br Devil River?

The structure is 31 ft (9.4 m) long with a longest span of 27 ft (8.3 m) and a deck 47 ft wide.

Who owns US-23 over N Br Devil River?

It is owned by the State Highway Agency.