LJA Engineering and Surveying

LJA's transportation group, consisting of professional and technical personnel, serves both public and private clients on projects ranging from urban freeways and frontage roads to traffic management studies for major events and parking and circulation studies.

Services

Planning

Traffic Impact Analysis Studies
Major Event Traffic Management Studies
School Impact Analysis Studies
Thoroughfare Planning
GIS Environmental Applications
Corridor & Route Studies
Schematic Design
Public Involvement
Feasibility Studies

Traffic Engineering

Traffic Engineering Studies
Traffic Signal Timing & Design
Intelligent Transportation Systems
Pedestrian Facilities Planning
Signing & Pavement Markings
Parking and Circulation Studies
Highway Safety/Accident Studies
Intersection Capacity Analysis

Roadway/Bridge Design

Geometrics
Hydrology & Hydraulics
Construction Sequencing
Traffic Control Plans
Utility Relocations
Retaining Walls
Bridge Layouts
Bridge Design & Detailing
Surveying
Construction Management

LJA TXDOT PRECERTIFICATIONS

1.1.1 POLICY PLANNING
1.2.1 SYSTEMS PLANNING
1.3.1 SUBAREA/CORRIDOR PLANNING
1.4.1 LAND PLANNING/ENGINEERING
1.5.1 FEASIBILITY STUDIES
1.6.1 MAJOR INVESTMENT STUDIES
2.4.1 NATIONWIDE PERMIT
2.13.1 HAZARDOUS MATERIAL INITIAL SITE ASSESSMENT
2.14.1 ENVIRONMENTAL DOCUMENT PREPARATION
3.1.1 ROUTE STUDIES & SCHEMATIC DESIGN - MINOR ROADWAYS
3.2.1 ROUTE STUDIES & SCHEMATIC DESIGN - MAJOR ROADWAYS
3.3.1 ROUTE STUDIES & SCHEMATIC DESIGN - COMPLEX HIGHWAYS
3.4.1 MINOR BRIDGE LAYOUTS
3.5.1 MAJOR BRIDGE LAYOUTS
3.6.1 MULTI-LEVEL INTERCHANGE AND EXOTIC BRIDGE LAYOUT
4.1.1 MINOR ROADWAY DESIGN
4.2.1 MAJOR ROADWAY DESIGN
4.3.1 COMPLEX HIGHWAY DESIGN
4.4.1 MAJOR FREEWAY INTERCHANGES AND DIRECT CONNECTORS
5.1.1 MINOR BRIDGE DESIGN
5.2.1 MAJOR BRIDGE DESIGN
5.3.1 MULTI-LEVEL INTERCHANGE DESIGN
5.4.1 EXOTIC BRIDGE DESIGN
6.1.1 ROUTINE BRIDGE INSPECTION
6.2.1 COMPLEX BRIDGE INSPECTION
7.1.1 TRAFFIC ENGINEERING STUDIES
7.3.1 TRAFFIC SIGNAL TIMING
7.4.1 TRAFFIC CONTROL SYSTEMS ANALYSIS, DESIGN AND IMPLEMENTATION
7.5.1 INTELLIGENT TRANSPORTATION SYSTEMS
8.1.1 SIGNING, PAVEMENT MARKING AND CHANNELIZATION
8.2.1 ILLUMINATION
8.3.1 SIGNALIZATION
8.4.1 ITS CONTROL SYSTEMS ANALYSIS, DESIGN & IMPLEMENTATION
8.5.1 HIGHWAY-RAIL GRADE CROSSINGS
9.1.1 BICYCLE AND PEDESTRIAN FACILITY DEVELOPMENT
10.1.1 HYDROLOGIC STUDIES
10.2.1 BASIC HYDRAULIC DESIGN
10.3.1 COMPLEX HYDRAULIC DESIGN
10.4.1 PUMP STATION-HYDRAULICS
10.4.3 PUMP STATION-STRUCTURES
10.5.1 BRIDGE SCOUR EVALUATIONS AND ANALYSIS
11.1.1 ROADWAY CONSTRUCTION MANAGEMENT AND INSPECTION
14.3.1 TRANSPORTATION FOUNDATION STUDIES 15.1.1 SURVEY
15.1.2 PARCEL PLATS
15.1.3 LEGAL DESCRIPTIONS
15.1.4 RIGHT OF WAY MAPS
15.2.1 DESIGN AND CONSTRUCTION SURVEY
15.4.1 HORIZONTAL AND VERTICAL CONTROL FOR AERIAL MAPPING
18.2.1 SUBSURFACE UTILITY ENGINEERING