West Sixth Avenue over Graves and Dennison Dtch


+39.92557, -105.09179
39°55'32" N, 105°05'30" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:West Sixth Avenue over Graves and Dennison Dtch
Structure number:BFD-W.6TH-ALTER
Location:At Int of Alter & 6th
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Local (Urban) [19]
Length of largest span:25.6 ft. [7.8 m]
Total length:53.8 ft. [16.4 m]
Deck width edge-to-edge:61.4 ft. [18.7 m]
Skew angle:67°
Owner:City or Municipal Highway Agency [04]
Year built:1985
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:Concrete [1]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: January 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:5,459 [as of 2016]
Truck traffic:4% of total traffic
Structural appraisal:Equal to present minimum criteria [6]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Culvert condition:Deterioration or initial disintegration, minor chloride contamination, cracking with some leaching, or spalls on concrete or masonry walls and slabs. Local minor scouring at curtain walls, wingwalls or pipes. Metal culverts have a smooth curvature, non-symmetrical shape, significant corrosion or moderate pitting. [6]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:81.4

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
January 2017Fair6 out of 10545981.4
January 2015Good7 out of 10537181.4
January 2013Good7 out of 10537181.4
December 2010Good7 out of 10519181.4
December 2008Good7 out of 10519181.4
December 2006Good7 out of 10682177.2
December 2004Good7 out of 10682178.0
November 2002Good8 out of 10682178.0
October 2000Good8 out of 10722378.0
June 1999Good8 out of 10722378.0
June 1998Good8 out of 10722378.0
October 1996Good8 out of 10514978.0
November 1994Good8 out of 10514978.0
December 1992Good8 out of 10514994.0
November 1990Good8 out of 10777295.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Reinforced Concrete Culvertlinear ft.31724745250
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.1510500
Steel Protective Coatingsq. ft.1510005