ITEM 609 CURBING, CONCRETE MEDIANS, AND TRAFFIC ISLANDS
609.01 Description. This work consists of furnishing and constructing curb, combination curb
and gutter, medians, and traffic islands. This work also consists of excavating, backfilling, furnishing and installing joint materials, and disposing of surplus excavation and discarded materials according to Item 203.
609.02 Materials. Furnish materials conforming to:
Concrete, Class QC Misc. or QC 1[1][2] . 499 Preformed filler ................................ 705.03 Liquid Membrane-Forming Compounds for Curing Concrete ...................... 705.07 Concrete Sealers, non-epoxy .... 705.23.B Tie bar steel, epoxy coated ............... 709.00, 709.01, 709.03, 709.05 Coated dowel bars ............................ 709.13 [1] Replacing Coarse aggregate in the concrete mixes with Recycled Concrete Aggregate conforming to Supplement 1117 is an option. [2] Provide Concrete Cylinder Cure Box according to 511.04. Furnish the best quality of Berea or Amherst gray sandstone, or sandstone of equal quality. Furnish asphalt concrete curb conforming to 441 Type 1 intermediate course.
609.03 Stone Curb
A.Cutting and Dressing. Ensure that 95 percent of all straight curb pieces are at least 5 feet (1.5 m) long, with no pieces less than 42 inches (1.1 m). The Contractor may use a piece as short as 30 inches (0.8 m) for closure. For curves with a radius of 50 feet (15 m) or greater, the Contractor may use radially jointed straight curb pieces between 36 and 42 inches (0.9 and 1.1 m) long. For curves and corners with a radius of less than 50 feet (15 m), use pieces a minimum of 36 inches (0.9 m) long, and dress, joint, and set pieces to the radii specified. For all curves and corners, use curb sections that are approximately uniform in length. Dress all curb to a straight edge on top and on the exposed face and ends to a depth of at least 6 inches (150 mm) below the gutter elevation. Dress the ends at right angles to the face for straight curb and radially for curb on curves. Do not allow slack or hollow joints. Do not leave any projections after dressing the ends of any curb section that exceed 1/8 inch (3 mm) from the plane of the end of that section. Cut the edge next to the gutter to a 3 inch (75 mm) radius and dress the top to a 1/4 inch (6 mm) bevel rising from the exposed face. Use a pitching tool on the edge at the back to hand dress curb to the specified width.
B.Setting. Set the curb on a thoroughly compacted subgrade and with a 1 in 20 batter from the vertical backward from the gutter. Place a minimum 3 inch (75 mm) thick firm bed of aggregate material as a foundation for the curb. Use a heavy rammer to settle the curb in to place. Place and compact a minimum 4 inch (100 mm) wide aggregate backfill behind the curb to within 6 inches (150 mm) of the top. Bring the balance of the backfill to the level of the top of the curb for a distance of 2 feet (0.6 m) behind the curb wit h soil or other acceptable material. Thoroughly tamp the backing in layers not exceeding 6 inches (150 mm) in thickness, loose measurement, with an approved tamper or rammer. Perform as much of the backfilling and tamping as is consistent with alignment of the curb at the time the stone is first set. Set curb on curves in plastic concrete 6 inches (150 mm) thick as shown on the plans. Extend concrete the width of the curb plus 6 inches (150 mm) behind the curb, and bring concrete up behind the curb to within 4 inches (100 mm) of the top.
C.Joints. Set curbs such that below the dressed portions the space between ends of adjacent sections of curbing is not less than 1/8 inch (3 mm) at any point and not more than 4 inches (100 mm). Cushion the joints between the dressed portions of adjacent sections of curbing with 1/8 -inch (3 mm) thick expansion joint material. Trim expansion joint material flush with the curbing on all edges. If placing sandstone curb after placing pavement, fill remaining joints with dry sand to within 2 inches (50 mm) of the surface of the pavement, and fill to the pavement surface with asphalt concrete. Take care in filling this joint so that no asphalt conc rete comes in contact with the exposed surface of the curb.
D.Reusing Existing as New Curb. If specifically allowed by the plans, and to the extent available, use acceptable stone curb sections removed under Item 202 instead of furnishing new stone curb. Use salvaged curb at locations designated by the Engineer. Place all salvaged sections of curb continuously without interspersing salvaged and new curb sections. Haul and store salvaged curb as necessary. Cut, dress, set, and install joints in salvaged curbs according to the requirements for new curbs.
609.04 Cast-in-Place Concrete Curb and Combination Curb and Gutter.
A.Forms and Joints. Use approved steel forms for curbs. Securely brace and hold forms to the line and grade shown on the plans. The Contractor may use approved flexible forms of steel or wood to construct curved curb with a radius of 200 feet (60 m) or less. Immediately before placing concrete, clean the inner surface of the forms, and coat this surface with a form release agent. Where curb and combination curb and gutter is not constructed integral with, or tied to, the base or pavement, construct 1/4 -inch (6 mm) wide contraction joints at 10 feet (3 m) intervals using steel separator plates, a grooving tool, or a saw according to Item 451. For combination curb and gutter, construct the joint to an average depth of 2 inches (50 mm) or more. For curb, construct the joint to an average depth of one -fifth or more of the curb height. Where expansion joints occur in the abutting pavement, separate the section being placed with 1 inch (25 mm) thick 705.03 preformed filler. Where the curb is integral with, or tied to, the base or pavement, construct the same type of joints as used in the pavement. Space joints identically with the joints in the base or pavement. Leave curb forms in place until their removal will not crack, shatter, or otherwise injure the concrete. Do not seal transverse joints in cast-in-place concrete curb and combination curb and gutter. If curbs are to later serve as a support for a finishing machine in the placing of a surface course, align supporting edges so that the distance between the curbs is within 1/2 inch (13 mm) from that specified.
B.Placing. Place concrete in forms prepared as described above, and vibrate the concrete to eliminate all voids. Place concrete for curb that is integral with the concrete base or pavement while the base or pavement concrete is plastic. Where the presence of the finishing equipment on the forms at the end of the day’s run prevents completing the curb, install No. 5 (No. 16M) tie bars vertically in the pavement at 1 foot (0.3 m) intervals and in a line 3 inches (75 mm) inside of and parallel to the pavement edge. Install these tie bars to within 1 1/2 inches (38 mm) of the subgrade or subbase and 2 inches (50 mm) above the concrete base or pavement surface. Water cure this horizontal construction joint between the concrete base or pavement and the curb, or membrane cure the concrete base or pavement and remove the membrane before placing the curb. Immediately before pla cing the concrete curb, brush mortar (consisting of one part cement to two parts sand with enough water to form a workable mortar) into the surface area of the hardened concrete pavement or base where the curb is to be placed. Do not allow the mortar to dry before placing the curb on top of it.
C.Slip-Form Placement. The Contractor may use a self -propelled machine to place concrete curb or curb and gutter. Force the concrete through a mold of the proper cross -section to obtain the proper density and cross-section. If using a track, set and secure the track on which the machine opera tes to the exact line and grade given by the Engineer. Use concrete of a consistency that provides the desired shape and remains as placed without slumping of the vertical faces.
D.Finishing. Without adding extra mortar, float the top of the curb to thoroughly compact the concrete and produce a smooth and even surface. Round the edges of the curb using a tool specially designed for this purpose. Immediately after removing the forms, rub the exposed face of the curb with a float to eliminate unnecessary tool marks. Provide a finished surface free of irregularities and waves, and uniform in texture.
E.Protection. Cure concrete according to 451.11
609.05 Asphalt Concrete Curb. Use one of the following methods, or other method approved
by the Engineer, to furnish and place an asphalt concrete curb of the required cross-section.
A.Method A. After completing the surface course, paint or spray only the area to be occupied by the asphalt concrete curb with asphalt material conforming to 407.02. Apply the asphalt material at the rate of 0.15 gallon per square yard (0.7 L/m2). Place the curb with a hand -operated or self -propelled machine consisting of a hopper and power-driven screw, which forces the material through an extrusion tube. Force the material through a die attached to the end of the extrusion tube to obtain the proper density and cross-section.
B.Method B. As an independent operation preceding the final rolling of the asphalt concrete surface course on which the curb is placed, place loose asphalt concrete of sufficient height. Shape the loose asphalt concrete by hand methods using suitable templates or by other means to produce the specified cross-section. Compact the loose asphalt concrete using a hand-operated mechanical vibrating tamper equipped with a compacting shoe of such shape that will produce the specified final cross -section dimensions of the curb.
609.06 Concrete Median and Traffic Island
A.Forms and Joints. Securely brace and hold approved steel forms to the line and grade shown on the plans. The Contractor may use approved flexible forms of steel or wood to construct curves with a radius of 200 feet (60 m) or less. Immediately before placing concrete, clean the inner surface of the forms, and coat this surface with a form release agent. Where medians and traffic islands are not anchored to the pavement, construct contraction joints at 10-foot (3 m) intervals using steel separator plates, a grooving tool, or saw according to Item 451. Construct joints to a minimum depth of 2 inches (50 mm). Where the medians or traffic islands are anchored to the pavement, construct the same type of joints in the median or traffic island as used in the pavement. Construct joints to a minimum depth of 2 inches (50 mm) using steel separator plates, a grooving tool, or saw according to Item 451. Space the joints identically with the joints in the pavement. Leave forms in place until their removal will not crack, shatter, or otherwise injure the concrete.
B.Placing. Immediately before placing a concrete median or traffic island on subgrade, bring the subgrade to a thoroughly moistened condition by sprinkling with water at such times and in such a manner directed by the Engineer . Follow 511.12 for concrete placement during cold weather conditions. Place the concrete in forms prepared as described above, and vibrate the concrete to eliminate all voids.
C.Slip-Form Placement. The Contractor may use a self -propelled machine to place medians and traffic islands. Force the concrete through a mold of the proper cross -section to obtain the proper density and cross-section. If using a track, set and secure the track on which the machine operates t o the exact line and grade given by the Engineer. Use concrete of a consistency that provides the desired shape and remains as placed without slumping of the faces.
D.Finishing. Without adding extra mortar, finish the top of the median or traffic island to a broom texture. Round the edges using a tool specially designed for this purpose. Immediately after removing the forms, rub the exposed faces with a float to eliminate unnecess ary tool marks. Provide a finished surface free of irregularities and waves, and a uniform texture.
E.Curing and Treating. Cure concrete according to Item 451.11.
609.07 Method of Measurement. The Department will measure Sandstone Curb , Curb,
Combination Curb and Gutter, and Asphalt Concrete Curb by the number of feet (meters) complete in place, measured along the front face of the curb section. The Department will measure Concrete Traffic Island and Concrete Median by the number of square yards (square meters) or the number of cubic yards (cubic meters) complete in place.
609.08 Basis of Payment. The Department will pay for accepted quantities at the contract prices
as follows: Item Unit Description 609 Foot (Meter) Sandstone Curb 609 Foot (Meter) Curb, Type ___ 609 Foot (Meter) Combination Curb and Gutter, Type ___ 609 Foot (Meter) Asphalt Concrete Curb, Type ___ 609 Square Yard or Concrete Traffic Island Cubic Yard (Square Meter or Cubic Meter) 609 Square Yard or Concrete Median Cubic Yard (Square Meter or Cubic Meter) ITEM 610 CABLE BARRIER
610.01 Description. This work consists of furnishing and installing a proprietary high -tension
four cable barrier system, including line posts, steel sockets, concrete foundations, a vegetation control strip, and anchor terminals. Install the system at the locations shown on the plans in accordance with the manufacturer’s specifications and requirements. Install the same system throughout the project unless otherwise specified in the plans. Furnish a system with a maximum dynamic deflection of 10 feet based on MASH 2016 Test 11 (3-11 or 4 -11) unless otherwise specified in the plan. If Test 11 was only performed with one post spacing, the post spacing for the installation shall match what was used during the test. If Test 11 was performed with a range of post spacings, then the installed post spacing may be interpolated to meet the required deflection. The post spacing must not be greater than the post spacing used in Test 17 or 18 feet, whichever is less.
610.02 Materials. Furnish a system meeting NCHRP -350, MASH 2009, or MASH 2016 from
ODOT’s Roadway Approved Products List on the Office of Roadway Engineering’s web page. For letting dates after July 16, 2027, furnish systems meeting MASH 2016 from ODOT’s Roadway Approved Products List on the Office of Roadway Engineering’s web page. The furnished system shall be consistent throughout the entire project, with materials conforming to: Concrete, Class QC1 ............................. 499 Reinforcing steel .............................. 509.02 Preformed expansion joint filler ...... 705.03 Liquid membrane-forming compounds for curing concrete ....................... 705.07 Wire rope cable ................................ 710.09 Posts ................................................. 710.16 Galvanizing ...................................... 711.02 Reflectors ......................................... 726.01 Retroreflective sheeting...730.191, 730.194
610.03 Posts. Install steel posts per 710.16 set in steel socketed concrete foundations. Do not
permanently install posts until their respective runs of tensioned cable are ready for final connection to the anchor terminals. Replace any posts that are damaged during in stallation as determined by the Engineer at no additional cost to the Department. Center the socket into the concrete foundation and ensure it is plumb. Do not allow concrete to enter the socket during assembly.
610.04 Fittings. Install fittings (turnbuckles and other connection hardware) per manufacturer
guidelines that have been galvanized per 711.02 (ASTM A 153 or ASTM F2329). All cable splices shall be with turnbuckles or hardware with an open body design or holes that allow for inspection. Do not install torpedo or bullet splices with a close body design. Install turnbuckles at an interval that conforms to the manufacturer’s requirements and at least one set between anchor terminals. If allowed by the manufacturer, stagger the turnbuckles so that each one is offset from the one above it. The offset distance, if allowed, shall be determined by the manufacturer.
610.05 Foundations. Construct line post and anchor terminal foundations to be flush with the
vegetation control strip surface or finished ground if a vegetation control strip is not specified. Construct anchor post foundations, regardless of proprietary system being used, per SCD RM-8.1.
610.06 Vegetation Control Strip. Construct the concrete vegetation control strip integral to the
socketed concrete foundation or place an expansion joint filler conforming to 705.03 between the socketed concrete foundation and the concrete vegetation control strip. If drilling holes into the vegetation control strip to place the socketed concrete foundations, do not damage the vegetation control strip. Repair any damage to the vegetation control strip as directed by the Engineer at no expense to the Department. See plans for details on asphalt vegetation control strips.
A.Excavation. Excavate to the required depth and to a width that allows installation and bracing of forms. Shape and uniformly compact the subgrade to a surface conforming to the plans.
B.Forms. Use either fixed forms or slip-form methods. For fixed-form construction, use wooden or metal forms that extend the full depth of the concrete and that do not spring under the concrete pressure. For slip-form construction, perform the work according to 609.04.C.
C.Placing and Finishing. Immediately before placing concrete, thoroughly moisten the subgrade. Deposit concrete in a single layer, strike it off with a template, and smooth it with a float to obtain a sandy texture. Do not plaster the concrete. Use a 1/4 -inch radius edging tool to edge all outside edges and joints. Saw or form transverse joints every 8 feet to a depth of not less than one -fourth the thickness of the slab and to a width of approximately 1/8 inch. Install 1-inch-thick expansion joints per 705.03 every 100 feet. Install 1/2-inch-thick expansion joint filler between the vegetation control strip and any fixed structure that extends the full depth of the vegetation control strip. Follow Item 511.12 for concrete placement during cold weather conditions.
D.Curing. Cure concrete according to 451.11.
610.07 Tensioning. Tension the cables immediately after installation according to the
manufacturer’s temperature-adjusted tension chart. Measure the temperature of each cable using an infrared thermometer and provide an average temperature in the CA-R-1. Measure the tension in each cable with a calibrated tension meter that is supplied or otherwise approved by the manufacturer. Re - check and adjust tension at each independent run of cable barrier 7 to 14 days and 21 to 28 days after initial tensioning. Perform the tension checks at three independent locations along the cable barrier run: near the begin anchor terminal, near the turnbuckle splice, and near the end anchor terminal. At a minimum, take readings spaced at 150-foot intervals. A cable barrier run is defined as a length of cables between two anchor terminals. Submit a completed CA-R-1 to the Engineer for review and acceptance.
610.08 Anchor Terminals. Install anchor terminals meeting MASH TL -3 that are compatible
with the proprietary system in accordance with the manufacturer’s specifications and requirements. Do not terminate cable rail by transitioning to W -Beam guardrail, thrie -beam guardrail, or ot her barrier systems.
610.09 Delineation. Install Type 6 barrier reflectors per 626. At a minimum, cover the faces of
the first four posts completely on both sides that are perpendicular to the direction of travel with yellow reboundable retroreflective sheeting per 730.191 or yellow retroreflect ive Type XI sheeting per 730.194.
610.10 Submittals. Submit shop drawings for the selected cable barrier system and anchor
terminals to the Engineer at least 30 calendar days before planned construction. At a minimum, include the following information: • General notes and specifications • Temperature-adjusted tension chart with tolerances • Tension meter approval from the manufacturer (if using a meter not supplied by them) • Proposed post spacing and deflection • Product or installation manual(s) • Approved shop drawings of system (posts, hardware, etc.) • Approved shop drawings of anchor terminals
610.11 Method of Measurement. The Department will measure Cable Barrier by the number of
feet from center-to-center of end posts, excluding anchor terminals. The Department will measure Cable Barrier, Anchor Terminal by the number each assembly furnished and erected complete.
610.12 Basis of Payment.
The Department will pay for accepted quantities at the contract prices as follows: Item Unit Description 610 Foot Cable Barrier 610 Each Cable Barrier, Anchor Terminal 610 Square Yard Cable Barrier, Vegetation Control Strip, Concrete 610 Square Yard Cable Barrier, Vegetation Control Strip, Asphalt ITEM 611 PIPE CULVERTS, SEWERS, DRAINS, AND DRAINAGE STRUCTURES
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Source: Construction and Material Specifications, 2023 (rev. 7/17/2026) Edition. Pages 464–471 of 892. View official source ↗