County Road 30 over Michigan River


+40.61290, -106.08493
40°36'46" N, 106°05'06" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:County Road 30 over Michigan River
Structure number:057003000.4021A
Location:0.4 Mi E of St Hwy 14
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:37.4 ft. [11.4 m]
Total length:39.7 ft. [12.1 m]
Roadway width between curbs:30.5 ft. [9.3 m]
Deck width edge-to-edge:30.5 ft. [9.3 m]
Owner:County Highway Agency [02]
Year built:1990
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:42 [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:Better than present minimum criteria [7]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:91.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
November 2018FairSatisfactorySatisfactorySatisfactory4291.0
November 2016FairSatisfactorySatisfactorySatisfactory5390.9
November 2014FairSatisfactorySatisfactorySatisfactory5390.9
November 2012FairGoodSatisfactorySatisfactory5390.9
November 2010GoodGoodGoodGood6290.8
October 2008GoodGoodGoodGood6290.8
October 2006GoodGoodGoodGood11290.2
September 2004GoodGoodGoodGood11290.2
October 2002GoodGoodGoodGood11288.9
August 2000GoodGoodGoodGood4889.1
September 1999GoodGoodGoodGood4889.1
September 1998GoodGoodGoodGood4889.1
August 1996GoodGoodGoodGood14288.2
September 1994GoodVery GoodGoodGood14289.9
August 1992GoodVery GoodGoodGood14289.9
May 1990GoodVery GoodGoodGood2891.8

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.318031800
Steel Protective Coatingsq. ft.318000318
Steel Columneach100550
Steel Abutmentlinear ft.61301300
Steel Protective Coatingsq. ft.61300031
Steel Pier Caplinear ft.6106100
Corrugated or Orthotropic Decksq. ft.1,2144146002000
Wearing Surfacessq. ft.1,2141,214000
Steel Protective Coatingsq. ft.1,21441400800
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.80661400
Steel Protective Coatingsq. ft.8080000