Sylvan Hill Road over Twittys Creek


+36.92838, -78.66161
36°55'42" N, 78°39'42" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:Sylvan Hill Road over Twittys Creek
Structure number:000000000004915
Location:0.12 TO 759 - 0.65 TO 612
Purpose:Carries highway over waterway
Route classification:Minor Collector (Rural) [08]
Length of largest span:61.4 ft. [18.7 m]
Total length:64.6 ft. [19.7 m]
Roadway width between curbs:23.3 ft. [7.1 m]
Deck width edge-to-edge:27.2 ft. [8.3 m]
Owner:State Highway Agency [01]
Year built:1960
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 13.5 / HS 15 [3]
Main span material:Steel [3]
Main span design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]

Latest Available Inspection: August 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:371 [as of 2014]
Truck traffic:3% of total traffic
Deck condition:Satisfactory [6 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:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Equal to present minimum criteria [6]
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:74.2
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$678,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
August 2018FairSatisfactorySatisfactoryFair37174.2
August 2016FairSatisfactorySatisfactoryFair37176.7
August 2014FairSatisfactorySatisfactoryFair38077.7
August 2012FairSatisfactorySatisfactoryFair38077.7
August 2010FairSatisfactorySatisfactoryFair42969.1
August 2008FairSatisfactorySatisfactoryFair42969.1
October 2006FairSatisfactorySatisfactoryFair48569.0
September 2004FairSatisfactoryFairFair47670.0
September 2002FairSatisfactoryFairFair47970.0
October 2000FairSatisfactoryFairFair50370.5
August 1998FairFairFairFair50364.5
October 1996FairFairSatisfactoryFair60064.5
September 1994FairSatisfactorySatisfactorySatisfactory60075.5
August 1992FairSatisfactorySatisfactorySatisfactory36274.5
August 1990FairSatisfactorySatisfactorySatisfactory52073.5