00646062

Component

http://onlinepubs.trb.org...trr/1993/1420/1420-008.pdf

https://scholar.google.co...iesz&publication_year=1993

A study to determine the relative effectiveness of four highway drainage designs in preventing the contamination of groundwater by road salt is being conducted by the U.S. Geological Survey in cooperation with the Massachusetts Highway Department and FHWA. Four test sites, each representing a specific highway drainage design, are located along a 5-km section of Route 25 in southeastern Massachusetts. The drainage designs being tested are open drainage, closed drainage, closed drainage with snow berm, and full-snow-berm drainage. Preliminary comparisons of the effectiveness of the highway drainage systems are based on computations of chloride loads from road salt in groundwater and chloride loads from road salt discharged through the highway-drainage monitoring stations at each test site. A comparison of monthly chloride loads from November 1990 through May 1992 shows that chloride loads in groundwater at the closed drainage site, the closed drainage site with snow berm, and the full-snow-berm site are about 40, 50, and 20%, respectively, of the chloride load in groundwater at the open drainage site. The chloride load discharged through the full-snow-berm drainage site, and thus prevented from entering groundwater, is twice that discharged from the closed drainage site and from the closed drainage site with snow berm. Evaluation of the effectiveness of these drainage systems will be refined as additional data are collected and analyzed. Results from this study should also be applicable to the transport of other conservative chemical constituents in highway runoff.

This paper appears in Transportation Research Record No. 1420, Hydrology, Hydraulics, and Water Quality.Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01399834

English

p. 56-64

1993

Transportation Research Record

0309055687

Figures (6) ; References (5) ; Tables (2)

Berms; Chloride content; Contaminants; Deicing chemicals; Drainage; Drainage structures; Field tests; Groundwater; Measures of effectiveness; Prevention; Runoff

Contamination; Effectiveness

Highways; Hydraulics and Hydrology; Marine Transportation; Security and Emergencies; I26: Water Run-off - Freeze-thaw

TRIS, TRB, ATRI

Apr 11 1994 12:00AM

• ALTERNATIVES TO RIPRAP FOR PROTECTION AGAINST LOCAL SCOUR AT BRIDGE PIERS
• BRIDGE SCOUR IN TIDAL WATERS
• EXTREME RAINFALL FREQUENCY ANALYSIS FOR LOUISIANA
• GRASSY SWALES TO CONTROL HIGHWAY WATER QUALITY RUNOFF
• METHODOLOGY FOR INVESTIGATION OF INAPPROPRIATE POLLUTANT ENTRIES INTO STORM DRAINAGE SYSTEMS
• SCOUR AT BRIDGES ON SELECTED STREAMS IN ARKANSAS
• STUDY OF RIPRAP AS SCOUR PROTECTION FOR SPILL-THROUGH ABUTMENTS
• TIDAL INLET BRIDGE SCOUR ASSESSMENT MODEL
• TRANSPORT OF 2,4-D IN SOIL AS AFFECTED BY AGGREGATION AND ORGANIC MATTER CONTENT
• U.S. ARMY CORPS OF ENGINEERS RIPRAP DESIGN FOR FLOOD CHANNELS