Who We Are:

Seiler Lankes Group, LLC (SLG) is a multidisciplinary and multi-certified DBE/MEB/HUB firm located in Cedar Park/Austin Texas.  We have a team of talented professionals providing clients with a full range of transportation engineering services.  Together our team of engineers have extensive experience in the public and private sectors.  Our team’s combined diversified skills and knowledge of various local, state, and federal rules and regulations enable us to deliver innovative designs and solutions to our clients.

At SLG, we aim to provide continuous communication between our team and clients through all phases of every project while maintaining the highest level of accuracy and accountability.  When we encounter challenges on projects, we have a large network of contacts that enables us to respond to most any situation in a timely manner and with effective solutions.

Our overall services include:


· Feasibility Analyses

· Schematic Design and Review

· Quantity and Cost Estimates

· RFP and RFQ Documents

· Technical Provisions

· Implementation

· Maintenance and Operations


· Feasibility Studies

· Corridor/Route Identification Studies

· Monitor Traffic Studies

· Public Involvement

· Inter-agency Coordination

· Opinions of Probable Cost


· Preliminary/Final Schematics

· Right-of-Way Determinations

· Traffic Operations Analyses

· Quantity & Construction Estimates

· General Notes and Specifications

· Special Specifications & Provisions

· PS&E Preparation

- Traffic control plans

- Plan and profile designs

- Intersection design and analyses

- Structural layouts and design

- Hydrologic studies

- Hydraulic design

- Erosion control

- Illumination design

- Traffic signal design

- Pavement markings and signing

- Large sign design and detailing

· Post-PS&E services

- Bid document preparation

- Pre-bid meetings

- Bid opening

- Recommendation of award


· Design Plan Interpretation

· Design Plan Changes

· Requests for Information Response

· Contractor/Agency Coordination

· Utility Coordination Management

· Field Change Requests 

· As-built Plan Preparation