SH 121 ML SBND over US 287 ML, RR SPUR


+39.91819, -105.09114
39°55'05" N, 105°05'28" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SH 121 ML SBND over US 287 ML, RR SPUR
Structure number:E-16-HS
Purpose:Carries highway overpass over highway and railroad
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:114.8 ft. [35.0 m]
Total length:467.9 ft. [142.6 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:42.7 ft. [13.0 m]
Vertical clearance below bridge:23.0 ft. [7.0 m]
Skew angle:
Owner:State Highway Agency [01]
Year built:1972
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:4
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: December 2018

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:23,500 [as of 2011]
Truck traffic:4% of total traffic
Deck condition:Poor [4 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Sufficiency rating:73.5

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
December 2018PoorPoorSatisfactoryGood2350073.5
December 2016FairFairSatisfactoryGood2350075.5
December 2014FairSatisfactoryGoodGood2350077.5
January 2013FairSatisfactoryGoodGood2520077.4
November 2010FairSatisfactoryGoodGood2520077.4
January 2009GoodGoodGoodGood2520076.4
January 2007GoodGoodGoodGood2655076.4
April 2005GoodGoodGoodGood2807976.3
January 2003GoodGoodGoodGood2546976.4
December 2000GoodGoodGoodGood2235075.1
December 1998FairGoodGoodSatisfactory2235075.1
March 1997FairGoodGoodSatisfactory1620075.8
December 1994FairGoodGoodSatisfactory1620072.9
November 1992FairGoodGoodFair1510065.2
January 1991FairGoodVery GoodFair1790086.5

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.2,2501,82841840
Steel Protective Coatingsq. ft.2,2501,82800422
Reinforced Concrete Decksq. ft.19,88216,4372,3131,1320
Wearing Surfacessq. ft.18,71214,8323,88000
Reinforced Concrete Pier Walllinear ft.126124110
Reinforced Concrete Abutmentlinear ft.86612500
Strip Seal Jointlinear ft.8008000
Movable Bearingeach108200
Steel Protective Coatingsq. ft.1000010
Fixed Bearingeach1515000
Steel Protective Coatingsq. ft.1501500
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.936936000
Steel Protective Coatingsq. ft.936936000