I- 55 WB STEVENSON over THROOP ST

Map

Coordinates:
+41.84428, -87.65341
41°50'39" N, 87°39'12" W

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

Name:	I- 55 WB STEVENSON over THROOP ST
Structure number:	016003100000000
Old structure number:	000016003103706 `(from 1992 edition)`
Location:	0.7 M SW I94
Purpose:	Carries highway over highway
Route classification:	Principal Arterial - Interstate (Urban) `[11]`
Length of largest span:	68.9 ft. `[21.0 m]`
Total length:	180.1 ft. `[54.9 m]`
Roadway width between curbs:	68.9 ft. `[21.0 m]`
Deck width edge-to-edge:	72.2 ft. `[22.0 m]`
Skew angle:	3°
Owner:	State Highway Agency `[01]`
Year built:	1963
Year reconstructed:	2000
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:	3
Main spans material:	Prestressed concrete continuous `[6]`
Main spans design:	Stringer/Multi-beam or girder `[02]`
Deck type:	Concrete Cast-in-Place `[1]`

Good/Fair/Poor Condition:	Good
Status:	Open, no restriction `[A]`
Average daily traffic:	65,400 `[as of 2016]`
Truck traffic:	9% of total traffic
Deck condition:	Good `[7 out of 9]`
Superstructure condition:	Very Good `[8 out of 9]`
Substructure condition:	Very Good `[8 out of 9]`
Structural appraisal:	Equal to present desirable criteria `[8]`
Deck geometry appraisal:	Better than present minimum criteria `[7]`
Underclearances appraisal:	Superior to present desirable criteria `[9]`
Roadway alignment appraisal:	Equal to present desirable criteria `[8]`
Scour condition:	Bridge not over waterway. `[N]`
Sufficiency rating:	98.0

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
December 2016	Good	Good	Very Good	Very Good	65400	98.0
January 2015	Good	Good	Very Good	Very Good	77650	98.0
January 2013	Good	Good	Very Good	Very Good	79550	98.0
February 2011	Good	Good	Very Good	Very Good	84550	98.0
March 2009	Good	Good	Very Good	Very Good	85900	98.0
March 2007	Good	Good	Very Good	Very Good	81600	98.0
May 2005	Good	Very Good	Very Good	Very Good	80300	98.0
July 2003	Good	Very Good	Very Good	Very Good	75200	98.0
August 2001	Good	Very Good	Very Good	Very Good	67400	98.0
January 2001	Good	Very Good	Very Good	Very Good	58700	98.0
October 1999	Poor	Poor	Satisfactory	Satisfactory	72200	94.0
October 1997	Fair	Fair	Satisfactory	Satisfactory	69200	96.0
March 1996	Fair	Fair	Good	Satisfactory	66900	97.0
February 1995	Fair	Fair	Good	Satisfactory	68700	97.0
August 1993	Fair	Fair	Good	Satisfactory	62200	97.0
October 1992	Fair	Satisfactory	Good	Satisfactory	61350	98.0
July 1991	Fair	Satisfactory	Good	Satisfactory	61350	98.0

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.

Element	Units	Quantity	1-Good	2-Fair	3-Poor	4-Serious
Superstructure
Prestressed Concrete Girder/Beam	linear ft.	1,780	1,780	0	0	0
Deck
Reinforced Concrete Deck	sq. ft.	13,000	11,270	1,730	0	0
Substructure
Reinforced Concrete Column	each	14	14	0	0	0
Reinforced Concrete Pier Wall	linear ft.	40	40	0	0	0
Reinforced Concrete Abutment	linear ft.	145	145	0	0	0
Reinforced Concrete Pier Cap	linear ft.	185	185	0	0	0
Bearings
Elastomeric Bearing	each	20	20	0	0	0
Bridge Rail
Reinforced Concrete Bridge Rail	linear ft.	360	354	6	0	0