If you live or work Downtown, it's hard to ignore the torn up streets in some of the city's busiest and buzziest areas.

A lot of attention is being put on Indianapolis' very first bus rapid transit route, the Red Line, which is poised to bring more robust public transportation options to a city where it's been lacking.

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But you might not know that two other major BRT lines are coming after the Red Line's project Sept. 1 launch date, offering faster and more frequent service east, northeast and west of the city center.

These are the second and third phases of the bus rapid transit systems coming to Indianapolis, which is part of the larger Marion County Transit Plan.

The Purple Line is expected to start construction this winter, connecting the city of Lawrence to Indianapolis. In the fall of 2020, construction is planned to begin on the Blue Line, which travels along Washington Street west to the airport.

Both projects will be more expensive than the $96.3 million Red Line.The total project cost for the Purple Line is $140 million, and $200 million for the Blue Line.

Both budgets will receive most of their funding from the Federal Transit Administration Small Starts Grant and IndyGo income tax and bonds. A majority of the costs will go to repairing and replacing infrastructure, station and bus lane construction, and the vehicles.

Like the Red Line, both lines will use fully electric vehicles, and stations will feature ticket kiosks, real-time arrival information, shelters, seating and Wi-Fi at each station.

Here's everything we know so far about the Purple and Blue lines:

Purple Line

The Purple Line connects Indianapolis to Lawrence, with stops at two campuses of Ivy Tech Community College and Fort Harrison State Park. The route will run from Downtown north on Meridian Street and heading east on 38th Street, then north on Post Road.

It's expected to begin service in late fall 2021, with the design and construction process expected to last nearly two years.

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The Purple Line replaces the existing Route 39, IndyGo's highest ridership route, said IndyGo spokeswoman Lauren Day.

Part of the reason for a longer construction process is to repair crumbling infrastructure along the corridor.

"East 38th Street is a disaster for drainage," said Bryan Luellen, vice president of public affairs for IndyGo. "There's a pretty significant segment that basically needs to be fully reconstructed because the roadway has degraded so much over the years."

Luellen said the area that needs the most work is roughly between Keystone and Sheridan avenues, which is also where a new multi-use path will be installed.

Distance: 14.8 miles.

Number of stations: 31 (23 new stations, 8 existing) stations with level boarding.

Frequency: 10 minutes on weekdays, 15 minutes on weekends.

Notable stops:

Julia M. Carson Transit Center.

Indiana World War Memorial (Vermont Street).

Ivy Tech Community College locations on Fall Creek Parkway and in Lawrence.

The Children's Museum of Indianapolis.

Indiana State Fairgrounds.

Fort Harrison State Park.

Notable features: A multi-use path will run more than three miles from Tacoma to Sheridan avenues, providing a protected lane for pedestrians and bicyclists. Luellen said there is a significant lack of sidewalks for this segment, which would need to be added regardless.

"Looking at the existing bike network, that's a pretty big gap," he said. "So since we already had sidewalk in that segment for our plans, converting it to accommodate bicycles was a really great opportunity to improve connectivity overall."

The upgrades also include 9.5 miles of newer, rehabbed sidewalk. The route also connects two of the Ivy Tech Community College campuses.

Dedicated lanes: About 75 percent of the route will feature dedicated lanes that only buses will use.

Travel times: The Purple Line will significantly shave off ride times throughout the route compared to car or bus today. But because the buses will take up traffic lanes, it is expected to add on a few minutes of drive time for commuters.

Timeline:

Fall 2019: Complete design work, execute Small Starts Grant.

Complete design work, execute Small Starts Grant. Winter 2019/Early 2020: Bid project and begin construction.

Bid project and begin construction. Late fall 2021: Complete construction and begin service.

Blue Line

The Blue Line will connect riders to the Indianapolis International Airport, shaving off nearly 13 minutes from the current bus that runs from Downtown to the airport.

"Having reliable, comfortable, upgraded service from an airport to a downtown is something to strive for in a city that I think we should offer for visits and residents," Day said.

The route travels along Washington Street from Cumberland, west to the airport. It's separated into five segments: Airport, Near West, Downtown, Historic East and Cumberland.

The Blue Line replaces the existing Route 8, which is consistently in the top two in terms of performing in terms of ridership, Luellen said.

The Blue Line project is expected to take two years to construct, and will be done in phases, similar to the Red Line process. As with the Purple Line, there is major infrastructure to address.

"This is a huge undertaking," Luellen said. "The number of areas that don't have existing sidewalk, and Washington (Street) at I-465 on the west side, the roadway is in such bad shape and there's no drainage."

She said IndyGo spoke with the airport employee union and added trips based on their feedback so employees could get back Downtown after their shifts.

Luellen said early on in the project planning, the Blue Line would stop at Holt Road and then travel to the airport via I-70. After meeting with community members, the route was extended: it will now travel five more stops west to High School Road, and then stop at the Infosys and FedEx campuses, before ending at the airport.

Last fall, Infosys announced 70.5-acre U.S. education center at the old Indianapolis Airport terminal, expected to be completed by the end of 2020, which is part of a 141-acre project to be completed in phases over the course of several years. The plan is to employ 3,000 workers by 2023.

"When we had presented the Marion County Transit Plan, Infosys had not announced that massive investment," Luellen said. "Also recognizing that that combined with the expansion of FedEx, those are two big generators that this alignment allows us to serve those directly and still serve the airport ... That was just a huge opportunity for us to improve service."

Distance: 23.9 miles.

Number of stations: 38 stations with level boarding.

Frequency: 10 minutes on weekdays, 15 minutes on weekends.

Notable stops:

Segment 1: Indianapolis International Airport, Infosys and FedEx campuses.

Segment 2: Indianapolis Zoo.

Segment 3: Julia M. Carson Transit Center, Indiana State House (Capitol Avenue).

Segment 4: Downtown Irvington (Ritter Avenue).

Segment 5: Washington Square Mall.

Dedicated lanes: About 70 percent of the route will feature dedicated or semi-dedicated lanes.

Travel times: The Blue Line will significantly shave off ride times throughout the route. But because the buses will take up traffic lanes, it is expected to add on a few minutes of drive time for commuters.

Timeline:

May and June 2019: Public meetings.

Public meetings. Summer 2019-early 2020: Environmental review, complete design work, utility relocation, execute Small Starts Grant.

Environmental review, complete design work, utility relocation, execute Small Starts Grant. Fall 2020: Bid project and construction begins.

Bid project and construction begins. Fall 2022: Complete construction and begin service.

Kellie Hwang is a reporter at IndyStar. You can email her at kellie.hwang@indystar.com. Follow her on Twitter: @KellieHwang.