In order to improve evacuation routes out of New Orleans in the event of another major disaster such as Hurricane Katrina, the Louisiana Department of Transportation (L-DoT) is planning to construct an additional bridge across the Mississippi River. The department uses an interest rate of 8% and plans a 50-year life for either bridge. Which design has the better present worth? All costs in SM Land acquisition Annual O & M Annual increase Major Maintenance (Year 25) Salvage Cost Initial Construction Bridge M $220 2 0.04 185 30 $585 Bridge L $195 3 0.03 210 27 $470

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In order to improve evacuation routes out of New Orleans in the event of another major
disaster such as Hurricane Katrina, the Louisiana Department of Transportation (L-DoT) is
planning to construct an additional bridge across the Mississippi River. The department uses
an interest rate of 8% and plans a 50-year life for either bridge. Which design has the better
present worth?
All costs in $M
Land acquisition
Annual O & M
Annual increase
Major Maintenance (Year 25)
Salvage Cost
Initial Construction
Bridge M
$220
2
0.04
185
30
$585
Bridge L
$195
3
0.03
210
27
$470
Transcribed Image Text:In order to improve evacuation routes out of New Orleans in the event of another major disaster such as Hurricane Katrina, the Louisiana Department of Transportation (L-DoT) is planning to construct an additional bridge across the Mississippi River. The department uses an interest rate of 8% and plans a 50-year life for either bridge. Which design has the better present worth? All costs in $M Land acquisition Annual O & M Annual increase Major Maintenance (Year 25) Salvage Cost Initial Construction Bridge M $220 2 0.04 185 30 $585 Bridge L $195 3 0.03 210 27 $470
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