TRB ADC60 Summer Conference NJDOT Route 9 Drainage Improvements Pervious Asphalt · 2018. 6. 6. ·...
Transcript of TRB ADC60 Summer Conference NJDOT Route 9 Drainage Improvements Pervious Asphalt · 2018. 6. 6. ·...
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TRB ADC60 Summer Conference NJDOT Route 9 Drainage Improvements –
Pervious Asphalt
June 18, 2015
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Frequent flooding occurs along the portion of the Route 9 Southbound shoulder lying approximately 500-feet south of its intersection with Oxycocus Road in Stafford Township, Ocean County, NJ. Local businesses are adversely impacted.
PROBLEM STATEMENT
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LOCATION MAP
PROJECT AREA
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• June 2014 – Began design effort with field survey
• July 2014 – Subsurface Utility Test Pits
• August 2014 – Draft PS&E
• September 2014 – Final PS&E
• October 2014 – IEW begins/completes construction
PROJECT TIMELINE
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• Urban Principal Arterial
• 35 MPH Speed Limit
• ADT = 19,020 (2012)
• 1 Travel Lane Per Direction
• No Median
• 7-Foot Wide Shoulders (Surveyed)
• Curb on Southbound Side Only (Curb/Grass/Sidewalk)
ROUTE 9 – ROADWAY CHARACTERISTICS
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TRADITIONAL SOLUTION NOT FEASIBLE!!
8” STEEL GAS COVER = 2.8’ 2” TELEPHONE
COVER = 2.6’
12 - 4” PVC TELEPHONE COVER = 2.8’
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INFLITRATION TESTS (Downer Loamy Sand, DocB – HSG B)
2.0 in/hr
3.5 in/hr
8.1 in/hr
56.8 in/hr
NJDEP MINIMUM RATE = 0.5 in/hr
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DESIGN SOLUTION – Pervious Asphalt Shoulder
(2” STONE - #2)
(1” STONE - #57)
(OPEN-GRADED 9.5 MM FRICTION COURSE)
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DESIGN SOLUTION – Stone Infiltration Area
(WASHED RIVER JACK STONE CONSISTING OF 3” WHITE COBBLES )
(2” STONE - #2)
PLAN
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CONSTRUCTION COST ESTIMATE
25% OF TOTAL COST IMPERVIOUS COST = $125/ton
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CONSTRUCTION PHOTOS – October 13, 2014
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CONSTRUCTION PHOTOS – October 13, 2014
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CONSTRUCTION PHOTOS – October 13, 2014
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CONSTRUCTION PHOTOS – October 13, 2014
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CONSTRUCTION PHOTOS – October 13, 2014
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CONSTRUCTION PHOTOS – October 13, 2014
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CONSTRUCTION PHOTOS – Infiltration Area
October 13, 2014 October 16, 2014
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POST-CONSTRUCTION PHOTOS – October 16, 2014
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POST-CONSTRUCTION PHOTOS – October 16, 2014
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POST-CONSTRUCTION PHOTOS – October 16, 2014
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POST-CONSTRUCTION PHOTOS – October 16, 2014
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POST-CONSTRUCTION PHOTOS – October 16, 2014
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POST-CONSTRUCTION PHOTOS – October 16, 2014
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POST-CONSTRUCTION PHOTOS – October 16, 2014
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POST-CONSTRUCTION PHOTOS – October 16, 2014
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POST-CONSTRUCTION PHOTOS – October 16, 2014
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NJDEP BMP Manual Recommends:
• Vacuum sweep at least 4 times per year
• Follow sweep with high pressure hosing
• Remove and dispose of dislodged sediment
MAINTENANCE REQUIREMENTS
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WINTER 2014/2015 SUMMARY
From njweather.com
• 21ST coldest in 120 years of record (Ave Temp = 29.5⁰F)
• Coldest winter since 1993/1994 (29.0 ⁰F)
• 11.97” of rain
From Office of the New Jersey State Climatologist
• 8 significant snowfall events
• Total snowfall in Stafford Township = 25.6 inches
• Highest snowfall total for single event = 5.8 inches
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FIRST POST WINTER PHOTOS – April 2014
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FIRST POST WINTER PHOTOS – April 2014
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FIRST POST WINTER PHOTOS – April 2014
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POST WINTER PHOTOS
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POST WINTER PHOTOS
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POST WINTER PHOTOS
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FIRST POST WINTER PHOTOS – April 2014
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SECOND POST-WINTER – No Photos Taken
• However, during 3rd winter, reports of flooding resumed.
• Discovered maintenance had not occurred since end of
construction.
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THIRD POST WINTER PHOTOS – July 14, 2016
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THIRD POST WINTER PHOTOS – July 14, 2016
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THIRD POST WINTER PHOTOS – July 14, 2016
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THIRD POST WINTER PHOTOS – July 14, 2016
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THIRD POST WINTER PHOTOS – July 14, 2016
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THIRD POST WINTER PHOTOS – July 14, 2016
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THIRD POST WINTER PHOTOS – July 14, 2016
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Thank You!!
Michael P. Sears, P.E. HNTB Corporation Empire State Building 350 Fifth Avenue 57th Floor New York, NY 10018 (212) 915-9537 [email protected]
QUESTIONS
Before
After