Travel and commuting trouble spots as of 6 a.m.

Friday is off to a trying start as all inbound Lanes of the Stevenson Expressway were shut down at 1st Avenue following a multi-vehicle crash.

Crews were on the scene cleaning up and delays were expected as the investigation continued, though it was beginning to clear up as of 6 a.m.

IB 55 at 1st Ave - terrifying crash involving semi & 10 vehicles in construction zone. 15 injuries, all lanes open. pic.twitter.com/j5pFJjPF74
— Jeanette Hudson (@JHudsontraffic) June 19, 2015

TRAFFIC: Cars getting by IB Stevenson at First Ave after semi hit at least 10 cars. Still closed at La Grange. pic.twitter.com/1d3TyPAFfz
— Jenny Milkowski (@jennymilk) June 19, 2015

Avoid the IB Stevenson south of 1st Ave. All lanes are blocked due to a 10 vehicle crash. @cbschicago pic.twitter.com/MDoqwGQE0c
— Derrick Young (@DerrickcyoungMS) June 19, 2015

Current traffic on the IB Stevenson @ 1st Ave. where an earlier accident shut down all lanes. 10-11 cars involved. pic.twitter.com/fiw496HI4j
— WGN-TV Traffic (@WGNtraffic) June 19, 2015

Earlier remnants of a multiple vehicle crash near I-55 IB @ 1st. 15 injuries thus far! pic.twitter.com/FFE880yf8b
— Sarah Jindra (@SarahJindra) June 19, 2015

#StevensonExpressway CLOSED due to ACC NB btwn La Grange Rd & Harlem Av. Traffic backed up to #TriStateTollway. #chicagotraffic
— GeoTrafficChicago (@GeoTrafficChi) June 19, 2015

As of 5:30 a.m., though, there were no reported delays on public transportation or at the airports.

Here are some other areas and activities to keep an eye on:

Hey bike commuters! Catch us in Daley Plaza this morning for the #biketowork Rally! #bikechi
— Divvy (@DivvyBikes) June 19, 2015

Join us for the Bike to Work week Rally this morning at Daley Plaza! Thanks to our host #bikechicago
— Active Trans (@activetrans) June 19, 2015

Street closures in Humboldt Park closes Humboldt Blvd. between Division and California for the Puerto Rican Festival (through Sunday).
— WGN-TV Traffic (@WGNtraffic) June 19, 2015

In the west Loop, Randolph is blocked between Racine and Peoria for the Taste of Randolph (through Sunday evening).
— WGN-TV Traffic (@WGNtraffic) June 19, 2015

Earlier restrictions on bikes, strollers and carts related to high ridership, for Hawks celebrations, on the 'L' have ended.
— cta (@cta) June 18, 2015

There are a number of closures, daily and long term, through the Illinois Tollway system. Check the state’s map for the latest on impacted areas: