The Flower Show, St. Patrick's Day Festivities and snow will make travel a bit of a challenge this weekend.  

All weekend long the Spring Flower Show at the Bayside Expo Center will have a big impact on I-93/Xway traffic, especially at Columbia Road and Morrissey Blvd.  Expect Delays and/or use the MBTA instead of driving. 

Then on Sunday morning two St. Patrick's Day events will add to the traffic woes, a road race and the parade. 

Traffic is expected to be busy in South Boston on Sunday 18 due to the St. Patrick's Day Parade. BTD Commissioner Thomas J. Tinlin is encouraging parade goers use the MBTA.

The parade starts at 1:00 PM. An estimated 20,000 participants will gather along Dorchester Avenue, between Gillette Park and Old Colony Avenue, and West Broadway, between Dorchester Avenue and A Street, before proceeding along the following route:

• West Broadway to
• East Broadway, right on
• P Street, right on
• East 4th Street, left on
• K Street, right on
• East 5th Street, left on
• G Street, right around
• Thomas Park, left on
• Telegraph Street, left on
• Dorchester Street, ending at
• Andrew Square.

No parking will be allowed on the parade route on Sunday and vehicles will be towed.

In addition to the parade, a road race will begin at 10:00 AM at the intersection of F Street and West Sixth Street. Five to seven hundred runners will proceed along the following route:

• West Sixth Street, to
• Dorchester Avenue, right on
• East Broadway, down to
• Farragut Statue, back to
• East Broadway, right to
• West Broadway, left to
• E Street, to
• #230 West Sixth Street - the South Boston Boys and Girls Club.