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Nearby Bridges in NBI 2021: 2


MILLER ROAD over CISCO BR ONTONAGON RIVER (Route: 0)
Num:3027x
Posted for load [P]
Built: 1920, Reconstructed: N/A [0000]
Historic: Bridge is on the NRHP. [1]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 19.8 m = 65.0 ft
Main Spans: 1 at 19.5 m = 64.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 4.3 m = 14.1 ft (2 Lanes) and Out-To-Out: 4.7 m = 15.4 ft for a 4.9 m = 16.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Watersmeet [84380]: Gogebic County [053], Michigan [26]
Owned by County Highway Agency [02], DOT District: 1
SEC 15 WATERSMEET TWP
Condition
Deck: Poor [4]
Superstructure: Critical [2]
Substructure: Poor [4]
Loading
Design: M 13.5 / H 15 [2]
Operating: 6.2 metric ton = 6.8 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 3.9 metric ton = 4.3 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Basically intolerable requiring high priority of replacement [2]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Meets minimum tolerable limits to be left in place as is [4]
Waterway: Better than present minimum criteria [7] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: September 2020 [0920] and Frequency: 12
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 0.3 km = 0.2 mi
Traffic
ADT: 11 (1998) and Trucks: 0%
Future ADT: 11 (In 2018 )
OLD US-2 over CISCO BR ONTONAGON RIVER (Route: 0)
Num:3028x
Posted for load [P]
Built: 1927, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.5 Kilometers)

Bridge Type
Main Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 18.2 m = 59.7 ft
Main Spans: 1 at 17.6 m = 57.7 ft
Approach Spans: 0
Skew: 30
Width, Roadway: 9.1 m = 29.9 ft (2 Lanes) and Out-To-Out: 11.1 m = 36.4 ft for a 8.5 m = 27.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Watersmeet [84380]: Gogebic County [053], Michigan [26]
Owned by County Highway Agency [02], DOT District: 1
SEC 15 WATERSMEET TWP
Condition
Deck: Fair [5]
Superstructure: Serious [3]
Substructure: Poor [4]
Loading
Design: M 13.5 / H 15 [2]
Operating: 24.9 metric ton = 27.4 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 14.9 metric ton = 16.4 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Better than present minimum criteria [7] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: September 2020 [0920] and Frequency: 12
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 0.3 km = 0.2 mi
Traffic
ADT: 48 (1998) and Trucks: 0%
Future ADT: 48 (In 2018 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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