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Nearby Bridges in NBI 2021: 2


US-31 over MANISTEE RIVER (Route: 31)
Num:6436x
Open: no restriction [A]
Built: 1933, Reconstructed: 2005
Historic: Bridge is on the NRHP. [1]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.2 Kilometers)

Bridge Type
Main Span(s): Steel [3] Movable - Bascule [16]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Open Grating [3] with Wearing Surface: Epoxy Overlay [5]
Bridge Dimensions
Length: 96.3 m = 316.0 ft
Main Spans: 1 at 40.5 m = 132.9 ft
Approach Spans: 2
Skew: 0
Width, Roadway: 12.2 m = 40.0 ft (4 Lanes) and Out-To-Out: 16.4 m = 53.8 ft for a 12.2 m = 40.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0.3 m = 1.0 ft
Location
Manistee [50720]: Manistee County [101], Michigan [26]
Owned by State Highway Agency [01], DOT District: 2
IN MANISTEE
Condition
Deck: Poor [4]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: M 13.5 / H 15 [2]
Operating: 46.7 metric ton = 51.4 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 27.9 metric ton = 30.7 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: May 2020 [0520] and Frequency: 15
Future Work
Work Needed:
Bridge Detour: 1 km = 0.6 mi
Traffic
ADT: 14343 (2007) and Trucks: 4%
Future ADT: 20507 (In 2018 )
MAPLE STREET over MANISTEE RIVER (Route: 0)
Num:6470x
Open: no restriction [A]
Built: 1964, Reconstructed: 1993
Historic: Historical significance is not determinable at this time. [4]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.7 Kilometers)

Bridge Type
Main Span(s): Steel [3] Movable - Bascule [16]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Latex Concrete or similar additive [3]
Bridge Dimensions
Length: 87.2 m = 286.1 ft
Main Spans: 1 at 38.4 m = 126.0 ft
Approach Spans: 4
Skew: 0
Width, Roadway: 7.3 m = 24.0 ft (2 Lanes) and Out-To-Out: 11.3 m = 37.1 ft for a 11 m = 36.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0.3 m = 1.0 ft
Location
Manistee [50720]: Manistee County [101], Michigan [26]
Owned by City or Municipal Highway Agency [04], DOT District: 2
IN MANISTEE
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 50.5 metric ton = 55.6 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 30.1 metric ton = 33.1 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: October 1999 [1099] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.3 km = 0.2 mi
Traffic
ADT: 8000 (1992) and Trucks: 5%
Future ADT: 10800 (In 2010 )

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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