Commuters who plan on replacing a bus-Metro combo with a straight shot on the new Silver Line should plan on paying more to get to work.

After Metro announced its peak and non-peak Silver Line fares last week, advocacy group Reston 2020 crunched the numbers and found some commuters may pay twice as much to get to Downtown D.C.

Some of the highlights:

Current rail and bus users will see a nearly 40-percent increase over current round-trip costs (from $10.60 to $14.80 per day). Annually, the total will be $2,960.

For those who park in the Wiehle garage rather than ride the bus to the station, daily costs will increase 56 percent (to $16.55). That works out to $3,130 a year.

Costs for riders with a reserved parking space in the garage will nearly double (rising to an average of $20.45 per day, a 92 percent increase). They will face a total annual cost of $4,090.

See the entire analysis on Reston 2020’s blog.