Quinby Bridge Road over Machipongo River


+37.56464, -75.74297
37°33'53" N, 75°44'35" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:Quinby Bridge Road over Machipongo River
Structure number:000000000000357
Location:2.86 from 13/0.85 to 605
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:44.9 ft. [13.7 m]
Total length:315.6 ft. [96.2 m]
Roadway width between curbs:26.6 ft. [8.1 m]
Deck width edge-to-edge:29.9 ft. [9.1 m]
Vertical clearance below bridge:3.3 ft. [1.0 m]
Owner:State Highway Agency [01]
Year built:1988
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:7
Main spans material:Prestressed concrete [5]
Main spans design:Slab [01]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: June 2018

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:811 [as of 2014]
Truck traffic:1% 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:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Better than present minimum criteria [7]
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]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:88.4
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$100,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
June 2018FairGoodSatisfactorySatisfactory81188.4
June 2016FairGoodGoodSatisfactory81188.4
August 2014FairGoodGoodSatisfactory101087.3
August 2012FairGoodGoodSatisfactory101087.3
August 2010GoodGoodGoodGood101074.6
June 2008GoodGoodGoodVery Good101074.6
March 2006GoodGoodGoodVery Good93175.7
May 2004FairVery GoodSatisfactoryGood91775.7
June 2002GoodGoodGoodVery Good99475.6
October 2000FairSatisfactoryGoodVery Good99875.6
September 1996FairSatisfactoryVery GoodVery Good210078.0
August 1994FairSatisfactoryVery GoodVery Good160080.6
August 1992GoodGoodVery GoodVery Good104581.0
May 1990GoodGoodVery GoodVery Good104581.0