US Bridges

Usfs RTE 2173 over Little Indian River Br

Fair

Schoolcraft County, Michigan · 0.5 MI S Big Island Lake · Structure no. 091002000001008

Built
1963
62 years old
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
21 ft
2 main spans
Daily traffic
75
1975 count
Owner
Federal
U.S. Forest Service

About this bridge

Usfs RTE 2173 over Little Indian River Br is a steel culvert carrying Usfs RTE 2173 over Little Indian River Br in Schoolcraft County, Michigan. It was built in 1963, so it is 62 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 75 vehicles a day, projected to reach 50 by 2018. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesUsfs RTE 2173
CrossesLittle Indian River Br
Location0.5 MI S Big Island Lake
RouteFederal Lands Road 2173
CountySchoolcraft County
StateMichigan
Coordinates46.23036, -86.54958
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.6 US tons
Inventory rating49.3 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span8 ft (2.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (1975)
Projected traffic50 by 2018
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$10,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Usfs RTE 2173 over Little Indian River Br built?

It was built in 1963, making it 62 years old in 2025.

What condition is Usfs RTE 2173 over Little Indian River Br 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 October 2024.

How much traffic does Usfs RTE 2173 over Little Indian River Br carry?

About 75 vehicles per day (1975 count).

How long is Usfs RTE 2173 over Little Indian River Br?

The structure is 21 ft (6.4 m) long with a longest span of 8 ft (2.5 m).

Who owns Usfs RTE 2173 over Little Indian River Br?

It is owned by the U.S. Forest Service.