N DOWN RIVER RD over I-75

Map

Coordinates:
+44.67094, -84.69587
44°40'15" N, 84°41'45" W

Source: National Bridge Inventory. Information not verified; use at your own risk.

Name:	N DOWN RIVER RD over I-75
Structure number:	000000000002042
Old structure number:	20120015000S010 `(from 1992 edition)`
Location:	1.0 MI N OF M-72
Purpose:	Carries highway over highway
Route classification:	Major Collector (Rural) `[07]`
Length of largest span:	56.8 ft. `[17.3 m]`
Total length:	266.1 ft. `[81.1 m]`
Roadway width between curbs:	28.5 ft. `[8.7 m]`
Deck width edge-to-edge:	32.8 ft. `[10.0 m]`
Vertical clearance below bridge:	13.1 ft. `[4.0 m]`
Skew angle:	5°
Owner:	State Highway Agency `[01]`
Year built:	1961
Historic significance:	Bridge is not eligible for the National Register of Historic Places `[5]`
Design load:	MS 18 / HS 20 `[5]`
Number of main spans:	6
Main spans material:	Steel `[3]`
Main spans design:	Stringer/Multi-beam or girder `[02]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Latex Concrete or similar additive `[3]`

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	780 `[as of 1974]`
Deck condition:	Satisfactory `[6 out of 9]`
Superstructure condition:	Very Good `[8 out of 9]`
Substructure condition:	Good `[7 out of 9]`
Structural appraisal:	Better than present minimum criteria `[7]`
Deck geometry appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Underclearances appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Roadway alignment appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Scour condition:	Bridge not over waterway. `[N]`
Sufficiency rating:	85.3

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
March 2018	Fair	Satisfactory	Very Good	Good	780	85.3
March 2016	Fair	Satisfactory	Very Good	Good	780	85.3
April 2014	Fair	Satisfactory	Very Good	Good	780	85.3
April 2012	Fair	Satisfactory	Very Good	Good	780	85.3
April 2010	Fair	Satisfactory	Very Good	Good	780	85.3
March 2008	Fair	Satisfactory	Very Good	Good	780	86.3
March 2006	Fair	Satisfactory	Very Good	Good	780	86.3
February 2004	Fair	Satisfactory	Very Good	Good	780	86.3
December 2002	Fair	Satisfactory	Very Good	Good	780	86.3
December 2000	Fair	Satisfactory	Very Good	Good	780	85.3
August 1999	Fair	Satisfactory	Very Good	Good	780	87.3
August 1997	Fair	Satisfactory	Very Good	Good	780	82.2
July 1995	Fair	Satisfactory	Very Good	Good	780	82.5
June 1993	Fair	Satisfactory	Very Good	Satisfactory	780	82.5
April 1991	Poor	Satisfactory	Poor	Satisfactory	780	55.2