Part 1 — General
1.1 Section Includes
A.Fabricating and placing precast concrete barriers
B.Constructing cast -in-place concrete barriers
1.2 Related Sections
A.Section 02075 : Geotextiles
B.Section 02842: Delineators
C.Section 03055: Portland Cement Concrete
D.Section 03056: Self -Consolidating Concrete (SCC)
E.Section 03152: Concrete Joint Control
F.Section 03211: Reinforcing Steel and Welded Wire
G.Section 03390: Concrete Curing
H.Section 03392: Penetrating Concrete Sealer
I.Section 09981: Concrete Coating
J.Section 13553: IT S Conduit
1.3 References
A.AASHTO M 111: Zinc (Hot -Dip Galvanized) Coatings on Iron and Steel Products
B.AASHTO M 180 : Corrugated Sheet Steel Beams for Highway Guardrail
C.AASHTO M 235: Epoxy Resin Adh esives
D.ASTM A 36: Carbon Structural Steel
E.ASTM A 449: Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use
F.ASTM A 56 3: Carbon and Alloy Steel Nuts
G.ASTM A 572: High-Strength Low -Alloy Columbium -Vanadium Structural Steel
H.ASTM C 578: Rigid, Cellular Polystyrene Thermal Insulation
I.ASTM C 1315: Liquid Membrane- Forming Compounds Having Special Properties for Curing and Sealing Concrete
J.ASTM D 1621: Compressive Properties of Rigid Cellular Plastics
K.ASTM D 1777: Thickness of Textile Materials
L.ASTM D 6364: Determining Short -Term Compression Behavior of Geosynthetics
M.ASTM F 436: Hardened Steel Washers
N.ASTM F 1554: Anchor Bolts , Steel, 36, 55 and 105 -ksi Yield Strength
O.ASTM F 3125: High Strength Structural Bolts and Assemblies, Steel and Alloy Steel, Heat Treated, Inch Dimensions 120 ksi and 150 ksi Minimum Tensile Strength
P.AWS D1.5 : Bridge Welding Code
Q.UDOT Quality Management Plan
1.4 DEFINITIONS Not Used
1.5 Submittals
A.Manufacturer’s product data sheets for review for the following:
1.Barrier seal
2.Composite drainage material
3.Rigid plastic foam
4.Anchor rods
5.Epoxy
6.Include recommended product installation instructions for each product for information.
1.6 Acceptance
A.Remove and replace barrier section that does not meet the barrier smoothness requirements. Refer to this section, Article 3.3 paragraph D.
Part 2 — Products
2.1 Concrete
A.Class AA(AE) – Refer to Section 03055.
B.SCC – Refer to Section 03056 .
2.2 Structural Steel
A.Constant Slope Concrete Barrier:
1.Connection pin, connection loop, and stabilization pin. a. Refer to ASTM A 36.
b.Galvanize after fabrication according to AASHTO M 111.
B.F-Shape Concrete Barrier:
1.Connection pin a. ASTM A 449, Type 1
b.Plate washer 1) ASTM A 572, Grade 50
c.Galvanize after fabrication according to AASHTO M 111.
2.Connection loop
a.ASTM A 36
b.Galvanize after fabrication according to AASHTO M 111.
3.Stabilization pin and plate washer
a.ASTM A 36.
b.Galvanize after fabrication according to AASHTO M 111.
C.Welding
1.Refer to AWS D1.5.
2.3 Reinforcing Steel
A.Coated according to Section 03211.
B.Use of non- coated reinforcing steel allowed for precast F -Shape barrier sections constructed for use in work zone applications .
2.4 Barrier Seal
A.Polyester polyurethane open- cell foam 100 percent impregnated with asphalt.
B.Foam Unit Weight Requirements
1.Before impregnation 68 lbs/yd3 to 85 lbs/yd3
2.After impregnation 252 lbs/yd3 to 270 lbs/yd3
C.Impregnated asphalt foam returns to 95 percent of its original volume when compressed to 25 percent of its volume and released.
D.Impregnated asphalt foam remains stable at temperatures ranging from -40 degrees F to +150 degrees F.
2.5 Precast F-Shape Concrete Barrier
A.Use a Department pre- qualified supplier .
B.Refer to BA Series Standard Drawings for reinforcing steel.
C.Mark each barrier with 1½ inch numbers indicating the date of casting and identification number supplied by the inspector.
1.Mark “WORK ZONE ONLY” if barrier uses uncoated reinforcement.
2.Impress ¼ inch deep into the top center of the barrier.
D.Prevent cracking or damage during handling and storage of precast units.
1.Replace units with cracks greater than 0 .007 inch or damaged precast units.
E.Cure in accordance with Section 03390.
2.6 Barrier Delineation
A.Sheeting – Refer to Section 02842.
B.Hardware – Refer to GW Series Standard Drawings.
2.7 Surface Sealing Material
A.Penetrating concrete sealer – Refer to Section 03392.
B.Concrete coating – Refer to Section 09981.
1.Use only when colored concrete coating is specified.
2.8 Extrusion and Slip Form Machines for Cast -In-Place Constant
SLOPE BARRIER
A.Use equipment capable of vertical adjustment to the grade line while in forward motion.
B.Use equipment with an attached grade line gauge or pointer to make a continual comparison with the barrier being placed and the offset guideline.
C.Use equipment capable of accommodating pavement to barrier reinforcing bars.
2.9 Cast -In-Place Constant Slope Concrete Barrier
A.Electrical/ ITS Conduits and Junction Boxes .
1.Size and quantity according to contract drawings.
2.Refer to Section 13553.
B.Expansion Joints
1.Use preformed joint filler – Refer to Section 03152.
2.10 Composite Drainage Material
A.Use a two -layer geocomposite sheet drain consisting of drainage geotextile bonded to one side of a three- dimensional drainage core.
1.Drainage geotextile – Refer to Section 02075.
2.Drainage core:
a.High strength polystyrene or polypropylene.
b.Minimum compressive strength – 15,000 lbs/ft 2. 1) Refer to ASTM D 1621 or ASTM D 6364 .
c.Minimum thickness – 0.40 inches . 1) Refer to ASTM D 1777 .
d.Capable of multidirectional flow.
2.11 Rigid Plastic Foam
A.Preformed, extruded cellul ar polystyrene thermal insulation material that has a water absorption property of 0.3 or less – Refer to ASTM C 578.
2.12 Free Standing Barrier, F -Shape To Cast -In-Place Barrier
TRANSITION
A.Refer to BA Series Standard Drawings.
B.Thrie -Beam Rail:
1.Minimum galvanizing requirement conforming to AASHTO M 180, Type 1, Class A.
C.Thrie -Beam Terminal Connector Hardware:
1.Structural hex bolts conforming to ASTM F 3125, Grade A 325.
2.Hardened washers and heavy hex nuts according to ASTM F 436 and A 563 respectively.
3.Galvanize according to AASHTO M 111.
D.Transition Cap
1.Refer to ASTM A 36.
2.Galvanize according to AASHTO M 111.
3.Connection
a.½ inch diameter , threaded anchor rods conforming to ASTM F 1554, Grade 55.
b.Hardened washers and heavy hex nuts according to ASTM F 436 and A 563 respectively
c.Epoxy – Refer to AASHTO M 235 Type IV.
E.Field Side Strap – Refer to ASTM A 36.
1.Galvanize according to AASHTO M 111.
Part 3 — Execution
3.1 Preparation
A.Site Considerations
1.Protect work area when removing traffic barriers and crash cushions until the barriers and crash cushion are reconstructed or the hazard is mitigated.
2.Concrete Barrier :
a.Complete grading requirements and place any required paved surfaces before installing barrier. 1) Refer to BA Series Standard Drawings.
3.2 Precast Concrete Barrier – 32 Inch F - Shape
A.Installation includes moving, stockpiling, and placing all barriers.
B.Place barrier seal between each barrier unit so that enough pressure is exerted on the sealing material to form and maintain a permanent bond.
C.Refer to BA Series Standard Drawings.
3.3 Cast -In-Place Constant Slope Concrete Barrier – 42 Inch and
54 INCH
A.Refer to BA Series Standard Drawings.
B.Do not use precast mortar blocks to support the reinforcing steel.
C.Constant Slope Barrier Placed by Extrusion or S lip Form
1.Provide an offset guideline for the extrusion or slip form machine to maintain the predetermined grade.
2.Feed concrete to the extrusion or slip form machine at a uniform rate.
3.Operate machine uniformly restraining forward motion.
a.Produce well -compacted, dense concrete with consistency that maintains the shape of the barrier without support.
b.Produce a well -compacted mass of concrete free from surface pits larger than 1 inch in diameter and requiring no further finishing.
4.Saw or cut joints before applying curing compound.
5.Give the surface a final soft brush finish with strokes parallel to the line of barriers before applying curing compound.
6.Do not finish with a brush application of grout.
D.Cast-in-Place Constant Slope Barrier Smoothness:
1.Verify top of barrier during concrete placement using a 12 ft straightedge.
a.Top of barrier must not vary more than ½ inch, measured from top of surface of barrier to bottom surface of straight edge throughout barrier run.
2.Verify sloped face of barrier during concrete placement using a 4 ft straightedge.
a.Surface of traffic face must not vary more than 1 inch, measured from face of barrier to bottom surface of straight edge throughout barrier run.
E.Mark barrier at beginning, end, and 1,000 ft intervals with 1½ inch numbers i ndicating the date of casting.
1.Impress ¼ inch deep into the front face of barrier, 6 inches below the top.
F.Curing – Refer to Section 03390.
G.Seal concrete surfaces with a penetrating concrete sealer or a concrete coating.
1.Penetrating concrete sealer
a.Use when a colored concrete coating is not specified.
b.Not required when curing compound meets ASTM C 1315.
c.Refer to Section 03392.
2.Concrete Coating
a.Use when a colored concrete coating is specified.
b.Refer to Section 09981.
3.4 Delineation Hardware
A.Concrete Barrier – Attach L Barrier Reflector. Refer to GW Series Standard Drawings.
B.Attachment Location – Refer to BA Series Standard Drawings.
C.Application – Refer to GW Series Standard Drawings.
Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 734–741 of 1,331.