Columbia Road over Boston Branch


+37.66393, -78.14744
37°39'50" N, 78°08'51" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:Columbia Road over Boston Branch
Structure number:000000000005778
Location:0.30 to 611 - 0.60 to 605
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:21.7 ft. [6.6 m]
Total length:22.6 ft. [6.9 m]
Roadway width between curbs:25.3 ft. [7.7 m]
Deck width edge-to-edge:29.5 ft. [9.0 m]
Skew angle:20°
Owner:State Highway Agency [01]
Year built:1932
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Concrete [1]
Main span 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:550 [as of 2014]
Truck traffic:6% of total traffic
Deck condition:Satisfactory [6 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:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Equal to present minimum criteria [6]
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 the assessed or calculated scour condition. [8]
Sufficiency rating:80.6
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$359,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
June 2018FairSatisfactorySatisfactorySatisfactory55080.6
June 2016FairSatisfactorySatisfactorySatisfactory55087.8
June 2015FairSatisfactorySatisfactoryGood55087.8
June 2014FairSatisfactorySatisfactoryGood55086.3
June 2012FairSatisfactorySatisfactoryGood54386.3
June 2010FairGoodSatisfactoryGood54363.0
June 2008FairGoodSatisfactoryGood54366.0
May 2006GoodGoodGoodGood63265.3
May 2004GoodGoodGoodGood61365.3
May 2002GoodGoodGoodGood68265.3
May 2000GoodGoodGoodGood63163.3
May 1998GoodGoodGoodGood63163.3
September 1996GoodVery GoodVery GoodGood63863.3
June 1994GoodVery GoodVery GoodVery Good63863.3
July 1993GoodVery GoodVery GoodVery Good46164.3
May 1992GoodVery GoodVery GoodVery Good41664.3
July 1991GoodVery GoodVery GoodVery Good41664.3