STH 21 over IH USH 51-IH 39


+44.03504, -89.52928
44°02'06" N, 89°31'45" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:STH 21 over IH USH 51-IH 39
Structure number:B69002000000000
Location:AT JCT STH 21-USH 51
Purpose:Carries highway over highway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:130.9 ft. [39.9 m]
Total length:253.9 ft. [77.4 m]
Roadway width between curbs:51.8 ft. [15.8 m]
Deck width edge-to-edge:70.9 ft. [21.6 m]
Vertical clearance below bridge:16.4 ft. [5.0 m]
Skew angle:24°
Owner:State Highway Agency [01]
Year built:1985
Year reconstructed:2015
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:2
Main spans material:Steel continuous [4]
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]

Latest Available Inspection: June 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:5,100 [as of 2015]
Truck traffic:9% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Superior to present desirable criteria [9]
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:93.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
June 2018FairSatisfactoryGoodGood510093.0
June 2016FairSatisfactoryGoodGood510093.0
June 2014GoodGoodGoodGood470091.0
June 2012GoodGoodGoodGood470091.0
June 2010GoodGoodGoodGood470091.8
June 2008GoodGoodVery GoodGood470091.8
June 2006GoodGoodVery GoodGood470091.8
October 2004GoodGoodVery GoodGood470091.8
October 2002GoodGoodVery GoodGood613091.7
August 2001GoodGoodVery GoodGood392592.6
October 2000GoodGoodVery GoodGood392592.6
October 1998FairSatisfactoryVery GoodGood392594.6
November 1997FairSatisfactoryVery GoodGood392594.6
August 1996GoodGoodVery GoodVery Good392594.6
July 1995GoodGoodVery GoodVery Good392594.7
May 1994GoodGoodVery GoodVery Good392594.7
May 1993GoodGoodVery GoodVery Good344094.7
October 1992GoodVery GoodVery GoodVery Good344094.7
August 1991GoodVery GoodVery GoodVery Good279099.8

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.1,7581,758000
Steel Protective Coatingsq. ft.26,26726,2541300
Reinforced Concrete Decksq. ft.18,04117,122846730
Wearing Surfacessq. ft.18,04114,5413,50000
Reinforced Concrete Columneach55000
Reinforced Concrete Abutmentlinear ft.1561203420
Reinforced Concrete Pier Caplinear ft.7267500
Strip Seal Jointlinear ft.1501014000
Elastomeric Bearingeach77000
Movable Bearingeach75200
Fixed Bearingeach77000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.5074515600