M-3 WB CONN over I-375 & I-75 RAMP

Map

Coordinates:
+42.34333, -83.04450
42°20'36" N, 83°02'40" W

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

Name:	M-3 WB CONN over I-375 & I-75 RAMP
Structure number:	000000000011811
Old structure number:	82182251000S094 `(from 1992 edition)`
Location:	IN DETROIT OVER I-375 NW
Purpose:	Carries highway over highway
Route classification:	Principal Arterial - Other Freeways or Expressways (Urban) `[12]`
Length of largest span:	38.7 ft. `[11.8 m]`
Total length:	38.7 ft. `[11.8 m]`
Roadway width between curbs:	41.3 ft. `[12.6 m]`
Deck width edge-to-edge:	44.9 ft. `[13.7 m]`
Vertical clearance below bridge:	15.1 ft. `[4.6 m]`
Skew angle:	99°
Owner:	State Highway Agency `[01]`
Year built:	1964
Year reconstructed:	1998
Historic significance:	Bridge is not eligible for the National Register of Historic Places `[5]`
Design load:	MS 18+Mod / HS 20+Mod `[6]`
Main span material:	Steel `[3]`
Main span 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:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	22,748 `[as of 2007]`
Deck condition:	Good `[7 out of 9]`
Superstructure condition:	Fair `[5 out of 9]`
Substructure condition:	Satisfactory `[6 out of 9]`
Structural appraisal:	Somewhat better than minimum adequacy to tolerate being left in place as is `[5]`
Deck geometry appraisal:	Better than present minimum criteria `[7]`
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]`
Inventory rating:	66.9 tons `[60.8 metric tons]`
Sufficiency rating:	87.0

Date	Suff. Rating	Condition	Deck	Superstructure	Substructure	SD/FO	ADT
March 2016	87.0	Fair	Good	Fair	Satisfactory	-	22748
March 2014	87.0	Fair	Good	Fair	Satisfactory	-	22748
March 2012	87.0	Fair	Good	Fair	Satisfactory	-	22748
March 2010	87.0	Fair	Good	Fair	Satisfactory	-	22748
May 2008	97.0	Fair	Good	Satisfactory	Satisfactory	-	22748
May 2006	97.0	Fair	Good	Satisfactory	Satisfactory	-	14166
June 2004	97.0	Fair	Very Good	Satisfactory	Satisfactory	-	14360
May 2002	97.0	Fair	Very Good	Satisfactory	Satisfactory	-	14360
May 2000	97.0	Fair	Very Good	Satisfactory	Satisfactory	-	14360
August 1998	77.0	Fair	Fair	Fair	Satisfactory	-	14360
September 1996	97.0	Fair	Satisfactory	Good	Good	-	14360
August 1994	97.0	Fair	Satisfactory	Very Good	Good	-	14360
August 1992	97.0	Fair	Satisfactory	Very Good	Satisfactory	-	14360
June 1990	97.0	Good	Good	Very Good	Good	-	14360

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.

Element	Units	Quantity	1. Good	2. Fair	3. Poor	4. Serious
Superstructure
Steel Girder/Beam	linear ft.	312	297	15	0	0
Steel Protective Coating	sq. ft.	2,359	2,359	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	1,701	1,701	0	0	0
Substructure
Reinforced Concrete Abutment	linear ft.	112	112	0	0	0
Joints
Pourable Joint	linear ft.	112	87	25	0	0
Bearings
Movable Bearing	each	8	8	0	0	0
Fixed Bearing	each	8	8	0	0	0
Bridge Rail
Reinforced Concrete Bridge Rail	linear ft.	118	118	0	0	0