STC 4710 over ROCK CREEK


+45.91111, -116.39750
45°54'40" N, 116°23'51" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:STC 4710 over ROCK CREEK
Structure number:000000000029376
Location:9.4 S. 2.3 W. COTTONWOOD
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:67.9 ft. [20.7 m]
Total length:69.9 ft. [21.3 m]
Roadway width between curbs:27.2 ft. [8.3 m]
Deck width edge-to-edge:29.9 ft. [9.1 m]
Skew angle:22°
Owner:Other Local Agencies [25]
Year built:1998
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 18 / HS 20 [5]
Main span material:Prestressed concrete [5]
Main span design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Precast Panels [2]
Wearing surface:Bituminous [6]

Latest Available Inspection: June 2014

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:240 [as of 2014]
Truck traffic:4% of total traffic
Deck condition:Very Good [8 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:There are no noticeable or noteworthy deficiencies which affect the condition of the channel. [9]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:93.4

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
June 2014GoodVery GoodVery GoodGood24093.4
June 2012GoodVery GoodVery GoodGood24093.4
June 2010GoodVery GoodVery GoodGood24093.4
June 2008GoodVery GoodVery GoodGood17093.6
June 2006GoodVery GoodVery GoodGood17093.6
June 2004GoodVery GoodVery GoodVery Good17093.6
June 2002GoodVery GoodVery GoodVery Good17093.6
June 2000GoodExcellentExcellentVery Good18093.5
April 1999GoodExcellentExcellentExcellent18093.5

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
Prestressed Concrete Girder/Beamlinear ft.351351000
Prestressed Concrete Top Flangesq. ft.2,1002,100000
Wearing Surfacessq. ft.1,9111,911000
Reinforced Concrete Abutmentlinear ft.7571040
Elastomeric Bearingeach1010000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.299299000