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RM 620 Roundabout (I-35 to Deep Wood Drive)

This project includes construction of two overpasses, a roundabout, U-turns, frontage roads and widened lanes

Construction progress photo of the eastbound RM 620 overpass bridge at Chisholm Trail in March 2023
Select an image to view larger in a slide show

This project includes adding overpasses at Chisholm Trail and Lake Creek Drive, constructing a roundabout at RM 620 and Chisholm Trail beneath the new overpass, widening lanes, adding frontage roads and improving bicycle and pedestrian accommodations. To receive project updates, email RM620Roundabout@txdot.gov. 

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Construction progress photo of the eastbound RM 620 overpass bridge at Chisholm Trail in March 2023
Eastbound RM 620 overpass bridge at Chisholm Trail - March 2023
Construction progress photo of eastbound RM 620 at Lake Creek Drive intersection
Eastbound RM 620 at Lake Creek Drive - March 2023
Construction progress photo of westbound RM 620 at Lake Creek Drive in March 2023
Westbound RM 620 at Lake Creek Drive - March 2023
Eastbound RM 620 overpass bridge and roundabout construction progress in Round Rock
Eastbound RM 620 overpass bridge and roundabout construction progress - November 2022
Eastbound RM 620 at Briarwood Drive construction progress in Round Rock
Eastbound RM 620 at Briarwood Drive - November 2022
Westbound RM 620 at Lake Creek Drive construction progress in Round Rock
Westbound RM 620 at Lake Creek Drive - November 2022
Westbound RM 620 over Lake Creek Drive frontage road construction progress in Round Rock
Westbound RM 620 over Lake Creek Drive - November 2022
RM 620 Roundabout Progress - September 2020
RM 620 Roundabout Progress - September 2020
Deep Wood Drive
RM 620 at Deep Wood Drive before - February 2020
Lake Creek
RM 620 at Lake Creek Drive before - February 2020
Chisholm Trail
RM 620 at Chisholm Trail before - February 2020
RM 620 Roundabout Project Improvements
TxDOT officials join Williamson County Commissioner Terry Cook, Round Rock Mayor Craig Morgan, August Alvarado with Congressman John Carter’s office and others to turn dirt for the new RM 620 Roundabout project.
TxDOT officials join Williamson County Commissioner Terry Cook, Round Rock Mayor Craig Morgan, August Alvarado with Congressman John Carter’s office and others to turn dirt for the new RM 620 Roundabout project.
Members of the Round Rock High School Dragon Band perform at the groundbreaking ceremony for the RM 620 Roundabout project.
Members of the Round Rock High School Dragon Band perform at the groundbreaking ceremony for the RM 620 Roundabout project.

Project Activity

  • Lane Closure

    There are no lane closures at this time.

Funding

  • Construction cost: $27.4 million (TxDOT, City of Round Rock and Williamson County)

Schedule

  • Construction start: March 2020

  • Anticipated construction completion: late 2023, weather permitting

Contractor

  • Bridges and Roads, LLC

Project Map

Map of RM 620 Roundabout (I-35 to Deep Wood Drive)

Milestones

Complete

Construct eastbound and westbound frontage roads

Construct overpasses at Chisholm Trail and Lake Creek Drive
View Slideshow
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Construction progress photo of the eastbound RM 620 overpass bridge at Chisholm Trail in March 2023
Eastbound RM 620 overpass bridge at Chisholm Trail - March 2023
Construction progress photo of eastbound RM 620 at Lake Creek Drive intersection
Eastbound RM 620 at Lake Creek Drive - March 2023
Construction progress photo of westbound RM 620 at Lake Creek Drive in March 2023
Westbound RM 620 at Lake Creek Drive - March 2023
Eastbound RM 620 overpass bridge and roundabout construction progress in Round Rock
Eastbound RM 620 overpass bridge and roundabout construction progress - November 2022
Eastbound RM 620 at Briarwood Drive construction progress in Round Rock
Eastbound RM 620 at Briarwood Drive - November 2022
Westbound RM 620 at Lake Creek Drive construction progress in Round Rock
Westbound RM 620 at Lake Creek Drive - November 2022
Westbound RM 620 over Lake Creek Drive frontage road construction progress in Round Rock
Westbound RM 620 over Lake Creek Drive - November 2022
RM 620 Roundabout Progress - September 2020
RM 620 Roundabout Progress - September 2020
Deep Wood Drive
RM 620 at Deep Wood Drive before - February 2020
Lake Creek
RM 620 at Lake Creek Drive before - February 2020
Chisholm Trail
RM 620 at Chisholm Trail before - February 2020
RM 620 Roundabout Project Improvements
TxDOT officials join Williamson County Commissioner Terry Cook, Round Rock Mayor Craig Morgan, August Alvarado with Congressman John Carter’s office and others to turn dirt for the new RM 620 Roundabout project.
TxDOT officials join Williamson County Commissioner Terry Cook, Round Rock Mayor Craig Morgan, August Alvarado with Congressman John Carter’s office and others to turn dirt for the new RM 620 Roundabout project.
Members of the Round Rock High School Dragon Band perform at the groundbreaking ceremony for the RM 620 Roundabout project.
Members of the Round Rock High School Dragon Band perform at the groundbreaking ceremony for the RM 620 Roundabout project.

Widen lanes along RM 620 and build bicycle and pedestrian accommodations

Construct roundabout at RM 620 and Chisholm Trail

Downloads

Profile image for TxDOT Austin Opens in a new window
TxDOT Austin @TxDOTAustin Opens in a new window

TRAFFIC ALERT: #My35 lane closures 6/1 – 6/8 include closures at Williams Drive and US 79. Click here for a full cl… t.co/bHH2gJcgxy

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Jun 05, 2023 Opens in a new window
Profile image for TxDOT Austin Opens in a new window
TxDOT Austin @TxDOTAustin Opens in a new window

TRAFFIC ALERT: Upcoming #My35 lane closures 6/1 – 6/8 include closures at Williams Drive and US 79. Click here for… t.co/Rp7cQgc7WW

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Jun 03, 2023 Opens in a new window

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