County Road 21I over Illinois River


+40.44489, -106.14308
40°26'42" N, 106°08'35" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:County Road 21I over Illinois River
Structure number:057021I00.40026
Location:0.4 Mi E of St Hwy 125
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:28.9 ft. [8.8 m]
Total length:31.5 ft. [9.6 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:24.0 ft. [7.3 m]
Owner:County Highway Agency [02]
Year built:1980
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Steel [3]
Main span design:Stringer/Multi-beam or girder [02]
Deck type:Corrugated Steel [6]
Wearing surface:Gravel [8]

Latest Available Inspection: November 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:70 [as of 2016]
Deck condition:Satisfactory [6 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:Equal to present minimum criteria [6]
Water adequacy appraisal:Equal to present desirable criteria [8]
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 assessed or calculated scour condition. [5]
Sufficiency rating:88.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
November 2018FairSatisfactorySatisfactorySatisfactory7088.0
November 2016FairSatisfactorySatisfactorySatisfactory6688.0
November 2014FairSatisfactorySatisfactorySatisfactory6688.0
November 2012FairGoodSatisfactorySatisfactory6688.0
November 2010FairGoodSatisfactorySatisfactory3688.1
October 2008FairGoodGoodSatisfactory3688.1
October 2006GoodGoodGoodGood9788.0
September 2004GoodGoodGoodGood9788.0
October 2002GoodGoodGoodGood9787.1
August 2000FairGoodSatisfactorySatisfactory9786.8
September 1999FairGoodSatisfactorySatisfactory9786.8
September 1998FairGoodSatisfactorySatisfactory9786.8
August 1996FairSatisfactorySatisfactorySatisfactory3886.8
September 1994GoodGoodGoodGood3891.9
August 1992GoodGoodGoodGood3884.4
May 1990FairVery GoodSatisfactorySatisfactory7385.4

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.347034700
Steel Columneach100550
Steel Abutmentlinear ft.48024240
Steel Protective Coatingsq. ft.2400024
Steel Pier Caplinear ft.4804800
Corrugated or Orthotropic Decksq. ft.756075600
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.6354900
Steel Protective Coatingsq. ft.6363000