County Road 18 over Mallon Ditch


+40.69443, -106.44163
40°41'40" N, 106°26'30" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:County Road 18 over Mallon Ditch
Structure number:057001803.30028
Location:3.3 Mi W of Co Rd 12W
Purpose:Carries highway over waterway
Route classification:Minor Collector (Rural) [08]
Length of largest span:23.6 ft. [7.2 m]
Total length:23.6 ft. [7.2 m]
Deck width edge-to-edge:43.3 ft. [13.2 m]
Skew angle:45°
Owner:County Highway Agency [02]
Year built:1986
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:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: November 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:168 [as of 2016]
Truck traffic:9% of total traffic
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present minimum criteria [6]
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]
Culvert condition:Moderate to major deterioration or disintegration, extensive cracking and leaching or spalls on concrete or masonry walls and slabs. Minor settlement or misalignment. Noticeable scouring or erosion at curtain walls, wingwalls or pipes. Metal culverts have significant distortion and deflection in one section, significant corrosion or deep pitting. [5]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:85.9

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
November 2018Fair5 out of 1016885.9
November 2016Fair5 out of 1014685.9
November 2014Fair5 out of 1014685.9
November 2012Fair6 out of 1014697.0
November 2010Fair6 out of 1015296.9
October 2008Fair6 out of 1015296.9
October 2006Good7 out of 1016596.9
September 2004Good7 out of 1016597.9
October 2002Fair6 out of 1016594.9
August 2000Fair6 out of 1013194.9
September 1999Fair6 out of 1013194.9
September 1998Fair6 out of 1013194.9
August 1996Fair6 out of 1020094.9
September 1994Fair6 out of 1020094.9
August 1992Fair6 out of 1020095.9
May 1990Good8 out of 1013097.0

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Culvertlinear ft.61020410
Steel Protective Coatingsq. ft.6161000