+46.08237, -114.16999
46°04'57" N, 114°10'12" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 93 over ROCK CREEK
Structure number:P00007034+09841
Location:4M N DARBY
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:100.1 ft. [30.5 m]
Total length:101.1 ft. [30.8 m]
Roadway width between curbs:39.4 ft. [12.0 m]
Deck width edge-to-edge:42.3 ft. [12.9 m]
Owner:State Highway Agency [01]
Year built:1990
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
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 Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: March 2017

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:3,310 [as of 2015]
Truck traffic:3% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 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:Equal to present desirable criteria [8]
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]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:82.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
March 2017GoodGoodGoodGood331082.0
March 2015GoodGoodGoodGood534082.0
March 2013GoodGoodGoodGood534082.0
April 2011GoodGoodGoodGood534081.0
April 2009FairSatisfactoryVery GoodGood583082.0
October 2007GoodVery GoodVery GoodVery Good548082.0
June 2004GoodVery GoodVery GoodVery Good613082.0
August 2002GoodVery GoodVery GoodVery Good462082.0
July 1998GoodVery GoodVery GoodVery Good509082.0
August 1996GoodVery GoodVery GoodVery Good336082.0
December 1992GoodVery GoodVery GoodVery Good318282.1
October 1990GoodExcellentExcellentExcellent267282.1

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Prestressed Concrete Girder/Beamlinear ft.600600000
Reinforced Concrete Decksq. ft.4,2733,2291,04400
Reinforced Concrete Abutmentlinear ft.4641500
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.2039983210