I-75 NB OFF RAMP over RR AND MAINT RD

Map

Coordinates:
+42.29040, -83.13047
42°17'25" N, 83°07'50" W

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

Name:	I-75 NB OFF RAMP over RR AND MAINT RD
Structure number:	000000000011717
Old structure number:	82182194000B015 `(from 1992 edition)`
Location:	IN DETROIT
Purpose:	Carries highway over highway and railroad
Route classification:	Principal Arterial - Interstate (Urban) `[11]`
Length of largest span:	83.0 ft. `[25.3 m]`
Total length:	533.2 ft. `[162.5 m]`
Roadway width between curbs:	24.9 ft. `[7.6 m]`
Deck width edge-to-edge:	28.2 ft. `[8.6 m]`
Vertical clearance below bridge:	13.1 ft. `[4.0 m]`
Owner:	State Highway Agency `[01]`
Year built:	1967
Year reconstructed:	2018
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:	12
Main spans material:	Steel `[3]`
Main spans design:	Stringer/Multi-beam or girder `[02]`
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:	103,925 `[as of 2014]`
Truck traffic:	12% of total traffic
Deck condition:	Excellent `[9 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:	Better than present minimum criteria `[7]`
Underclearances appraisal:	Equal to present minimum criteria `[6]`
Roadway alignment appraisal:	Equal to present desirable criteria `[8]`
Scour condition:	Bridge not over waterway. `[N]`
Sufficiency rating:	85.0

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
December 2018	Good	Excellent	Very Good	Good	103925	85.0
May 2017	Fair	Satisfactory	Very Good	Good	13350	91.0
May 2015	Fair	Satisfactory	Very Good	Good	13350	91.0
May 2013	Fair	Satisfactory	Very Good	Good	13350	91.0
May 2011	Fair	Satisfactory	Very Good	Good	13350	91.0
May 2009	Fair	Satisfactory	Good	Satisfactory	13350	91.0
June 2007	Fair	Satisfactory	Good	Good	13350	91.0
June 2005	Fair	Satisfactory	Good	Good	13350	91.0
June 2003	Fair	Satisfactory	Satisfactory	Good	13350	91.0
August 2002	Fair	Satisfactory	Fair	Good	13350	79.4
August 2000	Fair	Satisfactory	Fair	Good	13350	79.4
September 1998	Fair	Satisfactory	Satisfactory	Good	13350	91.0
August 1996	Good	Good	Good	Good	13350	91.0
August 1994	Good	Good	Good	Good	13350	90.7
July 1992	Good	Good	Good	Good	13350	90.7
November 1990	Good	Good	Good	Good	13350	90.7

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

Element	Units	Quantity	1-Good	2-Fair	3-Poor	4-Serious
Superstructure
Steel Girder/Beam	linear ft.	2,405	2,405	0	0	0
Steel Protective Coating	sq. ft.	34,791	34,791	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	15,888	15,888	0	0	0
Superstructure
Steel Pin or Pin & Hangar Assembly	each	40	40	0	0	0
Substructure
Reinforced Concrete Column	each	25	21	4	0	0
Reinforced Concrete Abutment	linear ft.	28	28	0	0	0
Reinforced Concrete Pier Cap	linear ft.	335	335	0	0	0
Joints
Strip Seal Joint	linear ft.	155	155	0	0	0
Pourable Joint	linear ft.	56	56	0	0	0
Bearings
Movable Bearing	each	28	28	0	0	0
Fixed Bearing	each	24	24	0	0	0
Bridge Rail
Reinforced Concrete Bridge Rail	linear ft.	1,201	1,201	0	0	0