US-12 WB over M-51

Map

Coordinates:
+41.80127, -86.24830
41°48'05" N, 86°14'54" W

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

Name:	US-12 WB over M-51
Structure number:	000000000000918
Old structure number:	11111101000S014 `(from 1992 edition)`
Location:	0.8 MI S OF NILES
Purpose:	Carries highway over highway
Route classification:	Other Principal Arterial (Urban) `[14]`
Length of largest span:	78.7 ft. `[24.0 m]`
Total length:	157.2 ft. `[47.9 m]`
Roadway width between curbs:	33.1 ft. `[10.1 m]`
Deck width edge-to-edge:	39.0 ft. `[11.9 m]`
Vertical clearance below bridge:	13.1 ft. `[4.0 m]`
Owner:	State Highway Agency `[01]`
Year built:	1955
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:	3
Main spans material:	Steel `[3]`
Main spans design:	Stringer/Multi-beam or girder `[02]`
Deck type:	Concrete Cast-in-Place `[1]`
Wearing surface:	Bituminous `[6]`

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	7,473 `[as of 2014]`
Truck traffic:	10% of total traffic
Deck condition:	Fair `[5 out of 9]`
Superstructure condition:	Satisfactory `[6 out of 9]`
Substructure condition:	Satisfactory `[6 out of 9]`
Structural appraisal:	Equal to present minimum criteria `[6]`
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:	Equal to present minimum criteria `[6]`
Scour condition:	Bridge not over waterway. `[N]`
Sufficiency rating:	97.0
Recommended work:	Bridge deck replacement with only incidental widening. `[37]`
Estimated cost of work:	$70,000

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
August 2018	Fair	Fair	Satisfactory	Satisfactory	7473	97.0
May 2016	Fair	Fair	Satisfactory	Satisfactory	7473	97.0
May 2014	Poor	Poor	Satisfactory	Satisfactory	6404	95.0
May 2012	Fair	Fair	Satisfactory	Satisfactory	6404	97.0
May 2010	Fair	Fair	Satisfactory	Good	6404	94.0
May 2008	Fair	Fair	Satisfactory	Good	6404	94.0
May 2006	Fair	Fair	Satisfactory	Good	6570	88.0
July 2004	Fair	Fair	Satisfactory	Good	3750	88.0
July 2002	Fair	Fair	Satisfactory	Good	3750	88.0
August 2000	Fair	Fair	Satisfactory	Good	3750	88.0
July 1998	Fair	Fair	Good	Good	3750	90.0
July 1996	Fair	Satisfactory	Good	Good	3750	82.0
July 1994	Fair	Fair	Good	Good	4400	81.0
May 1992	Fair	Fair	Very Good	Good	4400	81.0
May 1990	Fair	Satisfactory	Satisfactory	Good	4400	82.0

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.	1,098	0	958	140	0
Steel Protective Coating	sq. ft.	9,484	0	6,630	1,548	1,306
Deck
Reinforced Concrete Deck	sq. ft.	6,070	5,565	423	82	0
Wearing Surfaces	sq. ft.	5,206	5,157	40	9	0
Superstructure
Steel Pin or Pin & Hangar Assembly	each	14	0	13	1	0
Substructure
Reinforced Concrete Column	each	6	2	0	4	0
Reinforced Concrete Abutment	linear ft.	82	72	9	1	0
Reinforced Concrete Pier Cap	linear ft.	80	74	2	4	0
Joints
Strip Seal Joint	linear ft.	4	0	4	0	0
Other Joint	linear ft.	72	69	0	3	0
Bearings
Movable Bearing	each	14	0	14	0	0
Steel Protective Coating	sq. ft.	56	0	28	28	0
Fixed Bearing	each	14	0	0	14	0
Steel Protective Coating	sq. ft.	28	0	12	12	4
Bridge Rail
Steel or Aluminum Bridge Rail	linear ft.	314	298	16	0	0
Steel Protective Coating	sq. ft.	785	0	785	0	0