Section 3

CVGS Bridge Project

Examples of Cost Estimate and Final Project Cost

Case#1: Cost Estimate for Proposal of a 300' Bridge

Item Cost/Unit Quantity Cost
95 Bridge Members @ 1.5 grams $10,000/gram 142.5 g $1,425,000
Epoxy $10,000/gram 20 g $200,000
Subtotal (Bridge Construction)     $1,625,000
Earth Road $25,000/mile 20 mi $500,000
Swamp Road $100,000/mile 60 mi $6,000,000
Subtotal (Road Construction)     $6,500,000
Total     $8,125,000

Case #2: Cost Estimate for Proposal of a 450' Bridge

Item Cost/Unit Quantity Cost
150 Bridge Members @ 1.5 grams $10,000/gram 225 g $2,250,000
2 Tubes of Epoxy @ 28 grams/tube $10,000/gram 56 g $560,000
Subtotal (Bridge Construction)     $2,810,000
Earth Road $25,000/mile 40 mi $1,000,000
Swamp Road $100,000/mile 40 mi $4,000,000
Subtotal (Road Construction)     $5,000,000
Total     $7,810,000

Examples of Final Project Cost

 

Case #1

300' Bridge

Case #2

450' Bridge

Minimum Load 100 lbs 100 lbs
Test Load 110 lbs 70 lbs
Difference (Test - Minimum) 10 lbs -30 lbs
Cost Estimate $8,125,000 $7,810,000
Penalty($40,000/lb under 100 lbs) $0 $1,200,000
Actual Cost $8,125,000 $9,010,000

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