+40.90019, -86.87960
40°54'01" N, 86°52'47" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 421 over BROWN DITCH
Structure number:032390
Location:02.20 N SR 16
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:36.1 ft. [11.0 m]
Total length:66.9 ft. [20.4 m]
Roadway width between curbs:41.0 ft. [12.5 m]
Deck width edge-to-edge:43.6 ft. [13.3 m]
Owner:State Highway Agency [01]
Year built:1929
Year reconstructed:1960
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 18 / H 20 [4]
Main span material:Concrete [1]
Main span design:Arch - Deck [11]
Deck type:Not applicable [N]
Wearing surface:Bituminous [6]

Latest Available Inspection: December 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:4,798 [as of 2004]
Truck traffic:10% of total traffic
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:Equal to present minimum criteria [6]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:98.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
December 2017Fair-SatisfactorySatisfactory479898.0
December 2015Fair-SatisfactorySatisfactory479898.0
December 2013FairSatisfactorySatisfactorySatisfactory479898.0
January 2012FairSatisfactorySatisfactorySatisfactory479897.9
December 2009FairSatisfactorySatisfactorySatisfactory479896.4
April 2008FairSatisfactorySatisfactorySatisfactory479896.9
April 2006FairSatisfactorySatisfactorySatisfactory479896.9
April 2004FairGoodSatisfactoryGood479896.4
March 2002FairGoodSatisfactoryGood470496.4
July 2000FairGoodSatisfactoryGood417496.6
July 1998GoodGoodGoodGood417494.6
September 1996GoodGoodGoodGood417494.6
November 1994GoodGoodGoodGood360086.6
June 1993GoodGoodGoodGood360086.6
September 1990GoodGoodGoodGood360096.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Archlinear ft.3603600
Reinforced Concrete Abutmentlinear ft.87771000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.7272000