I 59/20 over 50 TH ST

Map

Coordinates:
+33.54556, -86.76167
33°32'44" N, 86°45'42" W

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

Name:	I 59/20 over 50 TH ST
Structure number:	011083
Location:	I 59 * 50 TH ST
Purpose:	Carries highway overpass over highway
Route classification:	Principal Arterial - Interstate (Urban) `[11]`
Length of largest span:	8.2 ft. `[2.5 m]`
Total length:	152.9 ft. `[46.6 m]`
Roadway width between curbs:	67.9 ft. `[20.7 m]`
Deck width edge-to-edge:	70.5 ft. `[21.5 m]`
Vertical clearance below bridge:	13.1 ft. `[4.0 m]`
Skew angle:	32°
Owner:	State Highway Agency `[01]`
Year built:	1974
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:	Monolithic Concrete (concurrently placed with structural deck) `[1]`

Good/Fair/Poor Condition:	Fair
Status:	Open, no restriction `[A]`
Average daily traffic:	70,200 `[as of 2015]`
Truck traffic:	11% of total traffic
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:	Equal to present minimum criteria `[6]`
Underclearances appraisal:	Basically intolerable requiring high priority of corrrective action `[3]`
Roadway alignment appraisal:	Equal to present desirable criteria `[8]`
Scour condition:	Bridge not over waterway. `[N]`
Sufficiency rating:	69.4
Recommended work:	Bridge rehabilitation because of general structure deterioration or inadequate strength. `[35]`
Estimated cost of work:	$2,989,000

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
November 2017	Fair	Good	Fair	Satisfactory	70200	69.4
November 2015	Fair	Good	Fair	Satisfactory	70200	69.4
November 2013	Fair	Satisfactory	Fair	Satisfactory	70200	69.4
November 2011	Fair	Satisfactory	Fair	Satisfactory	70545	69.4
November 2009	Fair	Satisfactory	Fair	Good	71710	69.2
November 2007	Fair	Satisfactory	Fair	Good	71565	69.2
November 2005	Fair	Satisfactory	Fair	Good	69460	69.5
January 2004	Fair	Satisfactory	Fair	Good	68040	69.7
February 2002	Fair	Satisfactory	Fair	Good	68040	69.7
March 2000	Fair	Good	Fair	Good	67530	69.7
March 1998	Fair	Good	Fair	Very Good	63620	70.2
January 1996	Fair	Good	Fair	Very Good	60820	72.0
March 1994	Fair	Good	Fair	Very Good	57275	75.6
November 1991	Good	Good	Good	Good	30785	89.5

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

Element	Units	Quantity	1-Good	2-Fair	3-Poor	4-Serious
Superstructure
Steel Girder/Beam	linear ft.	1,376	0	1,176	0	200
Steel Protective Coating	sq. ft.	13,993	0	0	13,993	0
Deck
Reinforced Concrete Deck	sq. ft.	10,779	10,779	0	0	0
Substructure
Reinforced Concrete Column	each	10	10	0	0	0
Reinforced Concrete Abutment	linear ft.	177	0	177	0	0
Reinforced Concrete Pier Cap	linear ft.	136	0	134	2	0
Joints
Compression Joint	linear ft.	282	0	178	0	104
Bearings
Movable Bearing	each	27	0	11	12	4
Fixed Bearing	each	27	0	27	0	0
Bridge Rail
Reinforced Concrete Bridge Rail	linear ft.	306	306	0	0	0