393_NB_RIGHT_TURN_COST_EST_2_9_2026.pdf
PDF 270 KB Posted
- Attached to
- CR393 South Northbound Right Turn Lane
- Solicitation number
- 26-11
- Issued by
- Walton County, Florida
About this file
This is an Engineer's Opinion of Probable Construction Costs document for Walton County, Florida, detailing the construction of a northbound right-turn lane at the intersection of U.S. Highway 98 and County Road 393 in Santa Rosa Beach. The project involves the paving of approximately 250 linear feet of new turn lane within the existing Walton County right-of-way, along with drainage enhancements, clearing and grubbing, and installation of approximately 30 linear feet of retaining wall. The contract duration is 120 days to substantial completion with an additional 30 days for punch list completion. The estimate includes mobilization at 10% of maximum bid ($24,960.46), maintenance of traffic at 5% of maximum bid ($12,480.23), and an owner's contingency of $30,000.00.
The engineer's cost estimate totals the subtotal of $67,440.70 for general requirements and contingencies, with additional line items covering sediment and turbidity barriers, inlet protection, clearing and grubbing, removal of existing concrete, excavation and embankment, asphalt milling and paving, concrete work including retaining walls and headwall extension, and reinforcing steel. Specific quantities include 205 linear feet of sediment barrier at $5.50 per linear foot, 304 cubic yards of regular excavation at $12.00 per cubic yard, 475 square yards of graded aggregate base at $95.00 per square yard, 395 square yards of asphalt milling at $3.50 per square yard, and 101 tons of Superpave asphaltic concrete at $210.00 per ton. The cost estimate reflects a detailed breakdown of materials and labor required for the intersection improvement project.
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Text version
WALTON COUNTY CR 393 NORTHBOUND RIGHT TURN LANE ENGINEER'S OPINION OF
PROBABLE CONSTRUCITON COSTS
NO. ITEM QUANTITY UNIT UNIT PRICE TOTAL PRICE
0101 1 MOBILIZATION (10% OF MAX. BID) 1 LS $24,960.46 $24,960.46
0102 1 MAINTENANCE OF TRAFFIC (5% OF MAX. BID) 1 LS $12,480.23 $12,480.23
OWNER'S CONTINGENCY 1 LS $30,000.00 $30,000.00
SUBTOTAL $67,440.70
0104 10 3 SEDIMENT BARRIER 205 LF $5.50 $1,127.50
0104 12 STAKED TURBIDITY BARRIER-NYLON REINFORCED PVC 35 LF $25.00 $875.00
0104 18 INLET PROTECTION SYSTEM 3 EA $350.00 $1,050.00
0110 1 1 CLEARING & GRUBBING (INCLUDES ASPHALT PAVEMENT REMOVAL) 1 LS $5,000.00 $5,000.00
0110 4 10 REMOVAL OF EXISTING CONCRETE (CURB & GUTTER AND SIDEWALK) 71 SY $50.00 $3,533.33
0120 1 REGULAR EXCAVATION 304 CY $12.00 $3,648.00
0120 6 EMBANKMENT 392 CY $18.00 $7,056.00
0285701 OPTIONAL BASE GROUP 1 (GRADED AGGREGATE BENEATH CONCRETE SIDEWALK) 26 SY $25.00 $652.78
0285714 OPTIONAL BASE GROUP 14 (GRADED AGGREGATE) 475 SY $95.00 $45,088.06
0327 70 6 MILLING EXISTING ASPHALT PAVEMENT, 1 1/2" AVG DEPTH 395 SY $3.50 $1,382.11
0334 1 52 SUPERPAVE ASPHALTIC CONCRETE, TRAQFFIC B, PG76-22 101 TN $210.00 $21,210.00
0339 1 MISCELLANEOUS ASPHALT PAVEMEMT 2 TN $350.00 $700.00
0400 0 11 CONCRETE CLASS NS, GRAVITY WALL INDEX 400-011 (INCLUDES REINFORCEMENT) 1 CY $1,500.00 $1,500.00
0400 2 11 CONCRETE CLASS II, RETAINING WALLS (CANTILEVER WALL) 12 CY $1,800.00 $21,497.24
HEADWALL EXTENSION (INCLUDES CONCRETE AND REINFORCEMENT) 1 LS $5,000.00 $5,000.00
0415 1 3 REINFORCING STEEL - RETAINING WALL (CANTILEVER WALL) 935 LB $2.00 $1,870.95
0425 1203 INLETS, CURP, TYPE 9, J BOT, <10' 1 EA $11,000.00 $11,000.00
0425 2 91 MANHOLES, J-8, <10' 1 EA $7,500.00 $7,500.00
0430175142 PIPE CULVERT, OPTIONAL MATERIAL, ROUND 42" S/CD 8 LF $360.00 $2,880.00
0430175148 PIPE CULVERT, OPTIONAL MATERIAL, ROUND 48" S/CD 10 LF $450.00 $4,500.00
0430984141 MITERED END SECTION, OPTIONAL MATERIAL, ROUND 48" SD 2 EA $8,500.00 $17,000.00
0520 1 10 CONCRETE CURB & GUTTER, TYPE F 445 LF $50.00 $22,250.00
0522 1 CONCRETE SIDEWALK AND DRIVEWAYS, 4" THICK 3 SY $75.00 $208.33
0522 2 CONCRETE SIDEWALK AND DRIVEWAYS, 6" THICK 23 SY $115.00 $2,683.33
0527 2 DETECTABLE WARNINGS 43 SY $50.00 $2,150.00
0530 3 4 RIPRAP, RUBBLE, F&I, DITCH LINING (INCLUDES D-2 FILTER FABRIC) 145 TN $125.00 $18,111.11
0536 1 1 GUARDRAIL-ROADWAY, GENERAL TL-3 42 LF $25.00 $1,050.00
0536 85 20 GUARDRAIL END TREATMENT - TRAILING ANCHORAGE 1 EA $1,500.00 $1,500.00
0536 85 26 GUARDRAIL END TREATMENT - TYPE CRT 1 EA $4,500.00 $4,500.00
0570 1 2 PERFORMANCE TURF, SOD 222 SY $5.00 $1,111.11
0705 10 2 OBJECT MARKER, TYPE 2 1 EA $150.00 $150.00
0706 1 3 RAISED PAVEMENT MARKER, TYPE B 84 EA $10.00 $840.00
0710 90 PAINTED PAVEMENT MARKINGS, FINAL SURFACE 1 LS $2,800.00 $2,800.00
* PAINTED PAVEMENT MARKINGS, WHITE, SOLID, 12" 193 LF * *
* PAINTED PAVEMENT MARKINGS, WHITE, SOLID, 24" 295 LF * *
* THERMOPLASTIC, STANDARD, WHITE, MESSAGE OR SYMBOL (BIKE LANE SYMBOL AND ARROW) 1 EA * *
* PAINTED PAVEMENT MARKINGS, WHITE, ARROW 4 EA * *
* PAINTED PAVEMENT MARKINGS, WHITE, SOLID 6" 0.145 GM * *
* PAINTED PAVEMENT MARKINGS, YELLOW, SOLID, 6" 0.013 GM * *
0711 11123 THERMOPLASTIC, STANDARD, WHITE, SOLID, 12" FOR CROSSWALK AND ROUNDABOUT 193 LF $4.00 $772.00
0711 11125 THERMOPLASTIC, STANDARD, WHITE, SOLID, 24" FOR STOP LINE AND CROSSWALK 295 LF $8.00 $2,360.00
0711 11160 THERMOPLASTIC, STANDARD, WHITE, MESSAGE OR SYMBOL (BIKE LANE SYMBOL AND ARROW) 1 EA $350.00 $350.00
0711 11170 THERMOPLASTIC, STANDARD, WHITE, ARROW 4 EA $200.00 $800.00
0711 16101 THERMOPLASTIC, STANDARD-OTHER SURFACES, WHITE SOLID, 6" 0.145 GM $6,000.00 $870.45
0711 16201 THERMOPLASTIC, STANDARD-OTHER SURFACES, YELLOW, SOLID, 6" 0.013 GM $6,000.00 $75.00
UTILITY ADJUSTMENTS 1 EA $10,000.00 $10,000.00
SUBTOTAL $236,652.31
0630 2 11 CONDUIT, FURNISH & INSTALL, OPEN TRENCH 15 LF $17.73 $265.95
0635 2 11 PULL & SPLICE BOX, F&I, 13" x 24" COVER SIZE 1 EA $1,892.50 $1,892.50
0660 1110 LOOP DETECTOR UNDUCTIVE, F&I, TYPE 10 3 EA $631.50 $1,894.50
0660 2101 LOOP ASSEMPLY-F&I, TYPE A 1 AS $1,950.34 $1,950.34
0660 2106 LOOP ASSEMPLY-F&I, TYPE F 3 AS $2,316.35 $6,949.05
SUBTOTAL $12,952.34
$317,045.34 *THESE QUANTITIES ARE PAID FOR UNDER PAINTED PAVEMENT MARKINGS (FINAL SURFACE), LUMP SUM - ITEM 710-90. THE QUANTITIES SHOWN ARE FOR ONE APPLICATION; SEE
SPECIFICATION 710 FOR THE NUMBER OF APPLICATIONS REQUIRED.
CR 393 NORTH BOUND RIGHT TURN LANE COST SUMMARY
ROADWAY CONSTRUCTION
GENERAL
CR 393 NORTHBOUND RIGHT TURN LANE IMPROVEMENTS TOTAL ESTIMATED CONSTRUCTION COST
DETECTOR LOOP CONSTRUCTION
47155.009 CR 393 NBOUND RT TURN LANE 2/9/2026 Page 1
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