TxDOT I-635 East Project · TxDOT I-635 East Project SPRING 2020 Full reconstruction of the...

TxDOT I-635 East Project SPRING 2020

TxDOT I-635 East ProjectDesign Modifications to Areas Near

Garland Avenue Intersection

SPRING 2020


Project Location

Project Limit– East of US 75 to South of the I-

635/I-30 interchange Project Length: 11 milesApproximately a 2-mile section of reconstruction on I-30 for transition


Congestion Relief

– Increased General Purpose Lanes Capacity

Increase area mobility and local connectivity

– Construction of continuous frontage roads in each direction

Provide reliable travel time

– “Grandfathered” existing managed lane operations

Improve Safety

– Address existing design deficiencies

Purpose and Need


Full reconstruction of the existing 8 general purpose lanes to 10 general purpose lanes, with auxiliary lanes at entrance and exit ramps

Full reconstruction of the existing 1 concurrent tolled managed lane

Full reconstruction of the discontinuous frontage roads to continuous frontage roads up to Town East Boulevard.

Full reconstruction of city street overcrossing and undercrossing structures

Full reconstruction of the I-30/I-635 Interchange

EXISTING TYPICAL SECTION

PROPOSED DESIGN-BUILD TYPICAL SECTION

Proposed Project


Project cost: $1.7 billion

Delivery method: Design-Build

Project Overview


Project Schedule


The design modifications are located along Interstate 635 beginning west of Garland Avenue to east of Shiloh Road.

289

289

DNT

DNT

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2 miles

DOWNTOWNDALLASDOWNTOWNDALLAS

635

635

35E

35E

67

67

67

80

30

30

30

30

75

75

75

75

12

12

12

12

12

78

7866

78

78

78

GARLAND

Garla

nd Rd

.

45 175

352 352

NW Hwy.

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Project Location of Design Modifications


Original Schematic Proposed Changes

HIGHLIGHTS:

Eastbound and Westbound I-635 Frontage Roads at Garland Avenue and KCS railroad track will be made at the same elevation as the I-635 mainlanes, eliminating the railroad underpass structures

Garland Avenue would be maintained at an approximately the same elevation, instead of a depressed roadway identified in the approved schematic

Added loop ramps

New location and traffic movement of U-Turns

Switch signalized intersection at Shiloh Road and the westbound frontage road, into a jug-handle like connection

Original Design Vs. Modified Design – Garland Avenue Intersection


Depressed Garland Ave.

Depressed Shiloh Rd.

At-grade intersection

Garland Avenue Interchange – Schematic

Braided Ramps for EB exit to NW Hwy and EB entrance from Garland

Ave.

WB frontage road over Shiloh Rd.

Shiloh Road jug handle connection

EB frontage road and WB frontage road KCS Railroad Underpass


Garland Avenue Interchange – Schematic

KCS Railroad Underpass


Garland Avenue Interchange – Proposed Design Changes

Elimination of 2 railroad underpass structures at EB

& WB I-635 frontage roads just east of Garland Ave. & KCS Railroad track. Frontage roads will be same elevation as proposed mainlanes in this area.

Loop ramps added to the north and south of I-635, replacing at-grade signalized intersections in the approved schematic.

Loop ramps to provide connection from EB frontage road to Garland Ave.

West-to-East traffic movement no longer via a U-Turn lane, but

instead maintained through the proposed loop ramp.

New East-to-West U-Turn moved approx.

1000 ft. to the west of Garland Ave.

At-grade signalized intersection at the WB frontage road to replace jug handle

connection from Shiloh Rd.

Garland Ave. & Shiloh Rd. maintained at same existing elevation, instead of

depressed roadway design.

Entrance ramp from Garland Ave. to EB I-635

mainlanes shifted approx. 1000 ft. to the east.

EB I-635 exit ramp to Northwest Hwy. shifted approx. 300 ft. to the west.


Garland Avenue – Looking up North

Garland Avenue Interchange – Proposed Design


WBFR loop ramp to Garland Ave.

Garland Avenue Interchange – Proposed Design


Submit Your Comments

Please submit your comments regarding the design modifications presented in this virtual presentation by using any of the three methods below by our deadline Friday, May 15, 2020.

For general questions about the presentation or the project, please contact TxDOT Project Manager, Grace Lo, P.E. at [email protected] or the project’s Public Information Officer, Dianne Tordillo at [email protected].

TxDOT I-635 East Project · TxDOT I-635 East Project SPRING 2020 Full reconstruction of the...

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