North Railroad Ave over MILTON CREEK


+45.84040, -122.81400
45°50'25" N, 122°48'50" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:North Railroad Ave over MILTON CREEK
Structure number:21280 000000000
Location:Port of St. Helens
Purpose:Carries highway over waterway
Route classification:Local (Urban) [19]
Length of largest span:129.9 ft. [39.6 m]
Total length:170.0 ft. [51.8 m]
Roadway width between curbs:14.1 ft. [4.3 m]
Deck width edge-to-edge:14.1 ft. [4.3 m]
Owner:Other Local Agencies [25]
Year built:1999
Historic significance:Historical significance is not determinable at this time [4]
Design load:M 18 / H 20 [4]
Main span material:Steel [3]
Main span design:Truss - Thru [10]
Deck type:Wood or Timber [8]
Wearing surface:Wood or Timber [7]

Latest Available Inspection: September 2017

Good/Fair/Poor Condition:Fair
Status:Posted for load [P]
Average daily traffic:50 [as of 2010]
Truck traffic:1% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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:47.4

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2017FairFairSatisfactoryFair5047.4
July 2015FairFairSatisfactoryFair5047.4
June 2013FairSatisfactorySatisfactoryFair5048.4
June 2011FairSatisfactorySatisfactoryFair5048.4
February 2010FairSatisfactorySatisfactoryFair5048.4

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Stringerlinear ft.1,47201,47200
Steel Protective Coatingsq. ft.7,82407,82400
Steel Trusslinear ft.247024700
Steel Protective Coatingsq. ft.2,22002221,776222
Steel Floor Beamlinear ft.540054000
Steel Protective Coatingsq. ft.4,53503,6289070
Steel Pin or Pin & Hangar Assemblyeach31215615600
Steel Protective Coatingsq. ft.624062400
Steel Abutmentlinear ft.2802800
Steel Pier Caplinear ft.2828000
Steel Protective Coatingsq. ft.686686000
Timber Decksq. ft.2,48001,61284424
Fixed Bearingeach120912
Steel Protective Coatingsq. ft.6006000