Office of Transportation Policy Studies, part of Department of Transportation, publishes this dataset on DOT Data Hub.

How often is it updated?

The publisher does not list a schedule. The last update was on 09/09/2026.

How do I download it?

It is available as CSV, JSON, XML. Use the links in Files and access, which open the official government source.

Checked Oct 30, 2026

Federal dataScience & Research

NHCCI

Name: NHCCI
Creator: Department of Transportation
Published: 2024-08-13T15:48:37.000Z

Published by Office of Transportation Policy Studies · Updated 09/09/2026

Official source Download CSV

Last updated: 09/09/2026; First published 08/13/2024
Update frequency: Not listed
Formats: 3; CSV, JSON, XML
Coverage: Nationwide; Federal data

About this dataset

The National Highway Construction Cost Index (NHCCI) is a price index that can be used both to track price changes associated with highway construction costs, and to convert current dollar expenditures on highway construction to real or constant dollar expenditures. This dataset contains the quarterly NHCCI estimates as well as the Seasonally Adjusted NHCCI and Component Contributions to Changes in NHCCI. Visit https://www.fhwa.dot.gov/policy/otps/nhcci/ for more information regarding the NHCCI.

Files and access

Links open the official government source

CSV downloaddata.transportation.govCSV
JSON (SODA API)data.transportation.govJSON
XMLdata.transportation.govXML

API endpoint: https://data.transportation.gov/resource/r94d-n4f9.json

Links open outside websites we do not control.

Frequently asked questions

Who publishes NHCCI?: Office of Transportation Policy Studies, part of Department of Transportation, publishes this dataset on DOT Data Hub.
How often is it updated?: The publisher does not list a schedule. The last update was on 09/09/2026.
How do I download it?: It is available as CSV, JSON, XML. Use the links in Files and access, which open the official government source.

Where this catalog comes from

Data.gov CatalogU.S. General Services Administration
State and local open data portalsSocrata Discovery API
State and city CKAN portalsCalifornia, Virginia, Boston, Houston and more
Government ArcGIS Hub sitesCity and county GIS data

Catalog checked 10/24/2026

We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.

Source: DOT Data Hub and Data.gov · Last updated 10/24/2026 · Listing only; the data stays with the publisher