Share:

ROUTE 415 over TAHQUAMENON RIVER

Map

Coordinates:
+46.36332, -85.68570
46°21'48" N, 85°41'09" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:ROUTE 415 over TAHQUAMENON RIVER
Structure number:000000000005917
Old structure number:48200013000B010 (from 1992 edition)
Location:2 MI. N. MC MILLAN
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:43.0 ft. [13.1 m]
Total length:86.9 ft. [26.5 m]
Roadway width between curbs:29.9 ft. [9.1 m]
Deck width edge-to-edge:30.5 ft. [9.3 m]
Owner:County Highway Agency [02]
Year built:1974
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:2
Main spans material:Prestressed concrete [5]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: October 2018

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:40 [as of 2016]
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Better than present minimum criteria [7]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:99.9

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
October 2018GoodGoodGoodGood4099.9
October 2016GoodGoodGoodGood4099.9
October 2014GoodGoodGoodGood4099.9
October 2012GoodGoodGoodGood15099.8
October 2010GoodGoodGoodGood15099.8
November 2008GoodGoodGoodGood15097.8
November 2006GoodGoodGoodGood15097.8
October 2004GoodGoodGoodGood15097.8
November 2002GoodGoodGoodVery Good15097.8
September 2000GoodGoodGoodGood15097.8
December 1998GoodGoodGoodGood15097.8
August 1996GoodGoodGoodGood15097.8
April 1994GoodVery GoodVery GoodGood7597.9
April 1992GoodVery GoodVery GoodGood7597.9
January 1990GoodExcellentVery GoodVery Good7597.9