+35.19511, -80.28253
35°11'42" N, 80°16'57" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:SR1770 over ROCKY RIVER
Structure number:000000001790450
Old structure number:000000000179450 (from 1992 edition)
Location:0.3 MI. N. ANSON CO.LINE
Purpose:Carries highway over waterway
Route classification:Local (Rural) [09]
Length of largest span:24.0 ft. [7.3 m]
Total length:200.1 ft. [61.0 m]
Roadway width between curbs:19.0 ft. [5.8 m]
Deck width edge-to-edge:20.0 ft. [6.1 m]
Owner:State Highway Agency [01]
Year built:1957
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 9 / H 10 [1]
Number of main spans:8
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Wood or Timber [8]
Wearing surface:Bituminous [6]

Latest Available Inspection: February 2017

Good/Fair/Poor Condition:Fair
Status:Posted for load [P]
Average daily traffic:400 [as of 1999]
Truck traffic:6% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Basically intolerable requiring high priority of corrrective action [3]
Water adequacy appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Basically intolerable requiring high priority of corrrective action [3]
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]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge with "unknown" foundation that has not been evaluated for scour. [U]
Sufficiency rating:60.1
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
February 2017FairGoodSatisfactorySatisfactory40060.1
February 2015FairGoodSatisfactorySatisfactory40060.1
February 2013PoorGoodGoodPoor40035.9
February 2011FairGoodGoodFair40051.7
March 2009FairExcellentExcellentFair40049.6
January 2007FairSatisfactorySatisfactoryFair40049.6
February 2005FairSatisfactorySatisfactoryFair40049.6
February 2003FairVery GoodGoodFair40049.6
July 2001FairVery GoodGoodFair40049.6
March 1999FairVery GoodGoodFair30049.7
March 1997FairVery GoodGoodSatisfactory30057.4
March 1995FairVery GoodGoodSatisfactory30057.4
April 1993FairVery GoodGoodFair30049.7
April 1991FairVery GoodGoodSatisfactory30058.7