00743183

Component

https://doi.org/10.3141/1589-15

http://scholar.google.com...frey&publication_year=1997

Construction of a 274.5-m-long (900-ft) and 24.4-m-high (80-ft) soil (upper) and rock (lower) cut slope on the eastbound side of the Massachusetts Turnpike at mile mark 94.1 eastbound for the proposed interchange with Route 146 combined conventional engineering and soil bioengineering solutions. Geologic mapping identified three sections (east, middle, and west) that had different patterns of rock discontinuities, which controlled rock cut design. Each required a different slope design for a stable rock cut. The soil cut design was controlled by soil density, groundwater seepage, and erosion potential from seepage and surface runoff. Soil bioengineering was used to control surface drainage and erosion on the cut soil slope above the 12.2-m-high (40-ft) rock cut and rapidly revegetate the disturbed soil slope, which addressed the project's environmental and aesthetic goals. Conventional crushed-stone drains augment the living soil bioengineering drains. Woody vegetation was used to reinforce the cut soil slope surface. Branches from native living woody plants were installed into the slope face, offering surface reinforcement. Root development along branch lengths provided additional reinforcement. The hydrologic regime was modified as growing plants remove moisture through transpiration and embedded bundled branches channel water off the slope. Basic soil bioengineering stabilization principles by using live fascines and brush layers for soil and rock cut slope stabilization are presented. Discussions include preconstruction conditions, environmental benefits, vegetation harvesting and design, installation, and performance as of October 1996. Cut slope stabilization through soil bioengineering produced an environmentally, aesthetically, and mechanically sound solution, illustrating the benefits of combined technologies.

This paper appears in Transportation Research Record No. 1589, Variable Tire Pressure, Flowable Fill, Dust Control, and Base and Slope Stabilization.

English

p. 92-98

1997

Transportation Research Record

030906161X

Figures (5) ; Photos (7)

Aesthetics; Embankments; Engineering; Environmental impacts; Erosion control; Revegetation; Slope stability; Slopes; Soil stabilization; Surface drainage

Bioengineering

Environment; Geotechnology; Highways; I42: Soil Mechanics; I43: Rock Mechanics

TRIS, TRB, ATRI

Nov 21 1997 12:00AM

• CHEMICAL ADDITIVES FOR DUST CONTROL: WHAT WE HAVE USED AND WHAT WE HAVE LEARNED
• COMPARISON OF ROAD MIX AND PLANT MIX CEMENT-TREATED AGGREGATE BASE COURSE
• DUST CONTROL: AUSTRALASIAN EXPERIENCES WITH VARIOUS CHEMICAL ADDITIVES
• EARTH MATERIALS CATALYST STABILIZATION FOR ROAD BASES, ROAD SHOULDERS, UNPAVED ROADS, AND TRANSPORTATION EARTHWORKS
• EFFECT OF LOWERED TIRE PRESSURES ON ROAD EROSION
• EVALUATING GROUNDWATER POLLUTION SUSCEPTIBILITY OF DUST SUPPRESSANTS AND ROADBED STABILIZERS: CASE STUDY OF A PETROLEUM-BASED PRODUCT
• EVALUATION OF RESILIENT MODULUS FOR LIME- AND CEMENT-STABILIZED SYNTHETIC COHESIVE SOILS
• LET ME SHINGLE YOUR ROADWAY
• MIX DESIGN FOR FLOWABLE FILL
• PERFORMANCE-BASED TESTING OF CHEMICAL STABILIZERS
• POTENTIAL FACTORS AFFECTING FLOW CONSISTENCY TEST METHOD FOR CONTROLLED LOW-STRENGTH MATERIALS
• REDUCING DAMAGE TO LOW-VOLUME ROADS BY USING TRUCKS WITH REDUCED TIRE PRESSURES
• SASKATCHEWAN HIGHWAYS AND TRANSPORTATION REDUCED TIRE PRESSURE INITIATIVE
• STABILIZATION OF SHALLOW SLOPE FAILURES WITH LIME PILES