I-75 over CONRAIL RR

Map

Coordinates:
+42.41497, -83.08496
42°24'54" N, 83°05'06" W

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

Name:	I-75 over CONRAIL RR
Structure number:	000000000011838
Old structure number:	82182252000R080 `(from 1992 edition)`
Location:	IN DETROIT
Purpose:	Carries highway over railroad
Route classification:	Principal Arterial - Interstate (Urban) `[11]`
Length of largest span:	60.7 ft. `[18.5 m]`
Total length:	220.2 ft. `[67.1 m]`
Roadway width between curbs:	166.7 ft. `[50.8 m]`
Deck width edge-to-edge:	173.6 ft. `[52.9 m]`
Vertical clearance below bridge:	23.0 ft. `[7.0 m]`
Skew angle:	99°
Owner:	State Highway Agency `[01]`
Year built:	1969
Year reconstructed:	2003
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:	4
Main spans material:	Prestressed concrete `[5]`
Main spans design:	Box Beam or girders - Single or Spread `[06]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Monolithic Concrete (concurrently placed with structural deck) `[1]`

Good/Fair/Poor Condition:	Good
Status:	Open, no restriction `[A]`
Average daily traffic:	174,074 `[as of 2007]`
Truck traffic:	7% of total traffic
Deck condition:	Good `[7 out of 9]`
Superstructure condition:	Very Good `[8 out of 9]`
Substructure condition:	Good `[7 out of 9]`
Structural appraisal:	Equal to present minimum criteria `[6]`
Deck geometry appraisal:	Superior to present desirable criteria `[9]`
Underclearances appraisal:	Meets minimum tolerable limits to be left in place as is `[4]`
Roadway alignment appraisal:	Equal to present desirable criteria `[8]`
Scour condition:	Bridge not over waterway. `[N]`
Sufficiency rating:	78.8

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
April 2018	Good	Good	Very Good	Good	174074	78.8
May 2016	Good	Good	Very Good	Good	174074	78.8
June 2014	Good	Good	Very Good	Good	174074	78.8
June 2012	Good	Good	Very Good	Good	174074	78.8
July 2010	Good	Good	Very Good	Good	174074	81.0
March 2008	Good	Very Good	Very Good	Good	174074	81.0
March 2006	Good	Very Good	Very Good	Good	183398	81.0
March 2004	Good	Excellent	Excellent	Good	211000	85.0
December 2002	Poor	Fair	Fair	Poor	211000	57.0
September 2001	Poor	Fair	Fair	Poor	211000	57.0
June 2000	Poor	Fair	Fair	Poor	211000	57.0
September 1998	Poor	Satisfactory	Fair	Poor	211000	58.0
October 1996	Fair	Satisfactory	Good	Fair	112600	74.0
September 1996	Fair	Satisfactory	Good	Fair	211000	74.0
October 1994	Fair	Satisfactory	Good	Fair	112600	74.0
August 1992	Fair	Satisfactory	Good	Fair	112600	74.0
July 1990	Fair	Satisfactory	Very Good	Satisfactory	112600	85.0

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.

Element	Units	Quantity	1-Good	2-Fair	3-Poor	4-Serious
Superstructure
Prestressed Concrete Closed Web/Box Girder	linear ft.	5,720	5,720	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	38,200	38,200	0	0	0
Substructure
Reinforced Concrete Column	each	36	36	0	0	0
Reinforced Concrete Abutment	linear ft.	364	364	0	0	0
Reinforced Concrete Pier Cap	linear ft.	542	542	0	0	0
Joints
Strip Seal Joint	linear ft.	364	364	0	0	0
Bearings
Movable Bearing	each	156	156	0	0	0
Fixed Bearing	each	52	52	0	0	0
Bridge Rail
Reinforced Concrete Bridge Rail	linear ft.	881	881	0	0	0