Planning Resources
and Tools

The Road Inventory Office is part of the Long Range Planning Division at TDOT. The office manages and maintains TDOT’s road inventory using the Interactive Tennessee Road Improvement Program (iTRIP), Transportation Roadway Information Management System (TRIMS) and Electronic TRIMS (E-TRIMS), which is available online.

iTRIP

The Interactive Tennessee Road Improvement Program (iTRIP) application provides access to a comprehensive, authoritative, and live roadway project database of project activities. The objective of iTRIP is to maintain a dataset of focused information on TDOT’s roadway projects. This mapping application was developed to serve as a valuable tool that is reliable, current, and easy to navigate for TDOT’s variety of customers. The accessible projects include a range of programs such as bridge, safety, resurfacing, and legislative information. The goal of this application is to provide a public-facing source for the user to access and review current roadway projects across the State of Tennessee. iTRIP provides useful, constantly updated (daily) data about all “Active” and “Let” projects that TDOT is currently working on.

E-TRIMS

E-TRIMS was developed initially around the early 2000’s to compliment the TRIMS (tabular) database and give the user ability to export and view in a GIS format. E-TRIMS is TDOT’s main portal for transportation-related data. It is an Oracle and web-based platform that supports the easy retrieval of roadway information to assist in proper decision making. E-TRIMS compliments the TRIMS database. The RPO’s can use E-TRIMS data to help guide transportation project prioritization decisions as well as for identifying projects for various grants and studies. Some of E-TRIMS datasets are:

  • Highway (centerline geometry)

  • Road segments

  • Route features

  • Roadway descriptions

  • Roadway geometrics

  • Traffic counts and AADT

  • Maintenance features (signs)

  • Maintenance inventory (attenuators and guard rails)

  • PPRM projects

  • Structures

  • Crash data (with limited access)

To access E-TRIMS, you will need a username and password established by TDOT staff.

Click Here ➔ E-TRIMS

TN-TIMES

The Tennessee Traffic Information Management and Evaluation System (TN-TIMES) is an analytical, data processing tool used by TDOT to maintain, analyze, and report traffic data. The data in TN-TIMES is managed at a statewide level for all roadways on the Functional Classification System, as guided by FHWA. This data is reported annually to FHWA, as well as used for numerous data-driven transportation planning projects, research purposes, and innovative analysis of traffic patterns throughout the state of Tennessee. The RPO’s can also use TN-TIMES data to help guide transportation project prioritization decisions as well as for identifying projects for various grants and studies. TN-TIMES data includes:

  • General Traffic Volumes

  • Advanced Traffic Statistics

  • Quick Reports

  • Report Center

To access TN-TIMES, please: 

Click Here ➔ TN-TIMES

TDOT’s SmartWay program provides up-to-date traffic information on our highway system. This system includes TN511, our HELP program and our Intelligent Transportation System. They help keep Tennessee traffic moving so motorists are safe and efficient in their travels. Learn more about the technology behind SmartWay.

TDOT SmartWay: Home (tn.gov)

An official Tennessee Transportation Map can be found here: 2023 Tennessee Transportation Map