+41.11486, -83.17320
41°06'53" N, 83°10'24" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SR 18 over ROCK CREEK
Structure number:7400691
Location:0.16 mi. West of SR100
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:55.1 ft. [16.8 m]
Total length:55.1 ft. [16.8 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:66.6 ft. [20.3 m]
Skew angle:31°
Owner:State Highway Agency [01]
Year built:1929
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 18 / H 20 [4]
Main span material:Concrete [1]
Main span design:Arch - Deck [11]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: August 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:6,253 [as of 2015]
Truck traffic:6% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Fair [5 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: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:Superior to present desirable criteria [9]
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:75.7

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2018FairFairFairFair625375.7
August 2017Fair-FairFair625376.7
August 2016FairSatisfactoryFairFair625376.7
August 2015FairSatisfactoryFairFair548077.0
August 2014FairSatisfactoryFairFair548086.2
September 2013FairSatisfactoryFairFair548077.0
August 2012FairSatisfactoryFairFair548077.0
August 2011FairSatisfactoryFairFair662074.0
August 2010FairSatisfactoryFairFair662074.0
September 2009FairSatisfactoryFairFair662073.9
September 2008FairSatisfactoryFairFair636074.0
August 2007FairSatisfactoryFairFair636074.0
August 2006FairSatisfactoryFairFair775073.4
September 2005FairSatisfactoryFairFair775073.4
August 2004FairSatisfactoryFairFair775073.4
September 2003FairSatisfactoryFairFair775073.4
September 2001FairSatisfactoryFairFair775073.4
August 2000FairGoodFairFair775073.4
September 1998FairGoodFairFair645873.9
September 1997FairSatisfactoryFairFair783673.4
September 1995FairSatisfactorySatisfactorySatisfactory737283.8
September 1994FairSatisfactorySatisfactorySatisfactory737283.8
October 1993FairSatisfactorySatisfactorySatisfactory737283.8
October 1992FairSatisfactorySatisfactorySatisfactory737283.8
October 1991FairSatisfactorySatisfactorySatisfactory737283.8