ROW maps.

ROW maps need to be obtained as part of data collection. ROW maps are used to define limits of, and rights to use, state property.

Easements.

If construction is proposed within existing easements, obtain a copy of the original conveyance document for the easement and check for restrictions on property use.

As built construction plans.

As built plans provide important data regarding project features not apparent from the surface and geometric features, such as vertical curvature, which are not readily obtained by field surveys.

Traffic data.

Traffic data is used to determine: the number of lanes needed, intersection channelization geometry, pavement design requirements, and desired safety-related improvements. If the project is part of the highway freight network, design vehicle type will influence pavement design, width, and curvature of turnarounds and intersections.

Crash data

. Crash data can be obtained through the CRIS webpage to determine crash concentrated areas.

Site visit information.

The project team uses the site visit to identify issues requiring additional studies that are not readily apparent from a two-dimensional plan set or three-dimensional modeling and to identify items which have significantly changed from data collected during preliminary engineering. Use the site visit to observe existing traffic patterns and operational/safety issues that may need to be addressed.

Utility information.

Depending on the location of the project, in a rapidly growing area, utilities may have changed drastically during long lag periods between project development phases.

Preliminary cost estimates.

Preliminary cost estimates are prepared during preliminary engineering. Cost estimates may change substantially due to the amount of time since the preliminary design was completed or due to changes in project scope. Update the project cost estimate as necessary and update the estimate in TxC.