Structure 3030 · Gogebic County, MI

Old Us-2 over Middle Br Ontonagon Riv

Carries Old Us-2 over Middle Br Ontonagon Riv, Sec 21 Watersmeet Twp.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure and Substructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructuresets the rating4/9 · Poor
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT32 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 4/9

32 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a tee-beam bridge.

Built192799 years old
Length31.8 ft9.7 m
Daily traffic13counted 1998
Last inspectedSeptember 2024every 12 months

Location

StateMichigan
CountyGogebic
LocationSec 21 Watersmeet Twp
CarriesOld Us-2
CrossesMiddle Br Ontonagon Riv
Coordinates46.27788, -89.30900

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length31.8 ft (9.7 m)
Max Span29.9 ft (9.1 m)
Deck Width38.1 ft (11.6 m)
Deck Area112.5 sq m
Main Spans1
Year Built1927

Traffic

Avg Daily Traffic13 (1998)
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000000003030

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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