US Bridges

N Down River RD over I-75 NB

Fair

Crawford County, Michigan · 1.0 MI N of M-72 · Structure no. 000000000002042

Built
1961
64 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
265 ft
6 main spans
Daily traffic
780
1974 count
Owner
State
State Highway Agency

About this bridge

N Down River RD over I-75 NB is a steel stringer/multi-beam or girder carrying N Down River RD over I-75 NB in Crawford County, Michigan. It was built in 1961, so it is 64 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 780 vehicles a day, projected to reach 780 by 1977. The structure is 265 ft (80.8 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesN Down River RD
CrossesI-75 NB
Location1.0 MI N of M-72
RouteCounty Highway 2054
CountyCrawford County
StateMichigan
Coordinates44.67094, -84.69587
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating63.9 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length265 ft (80.8 m)
Longest span56 ft (17.2 m)
Deck width33 ft (10 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic780 (1974)
Projected traffic780 by 1977
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.8 mi (11 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was N Down River RD over I-75 NB built?

It was built in 1961, making it 64 years old in 2025.

What condition is N Down River RD over I-75 NB 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 September 2024.

How much traffic does N Down River RD over I-75 NB carry?

About 780 vehicles per day (1974 count).

How long is N Down River RD over I-75 NB?

The structure is 265 ft (80.8 m) long with a longest span of 56 ft (17.2 m) and a deck 33 ft wide.

Who owns N Down River RD over I-75 NB?

It is owned by the State Highway Agency.