Federal-aid Highway System Length by Functional System, 2000-2024 (HM-15)
Annual road miles by functional system (National Highway System, other Federal-aid highways, and non-Federal-aid highways) and state for the 50 states, DC, and PR from the Highway Statistics Series table HM-15. Note: Missing 2009 and 2021.
Resources
4 resources available
-
Resource 1
APPLICATION/JSON -
Resource 2
APPLICATION/RDF+XML -
Resource 3
APPLICATION/XML -
Resource 4
TEXT/CSV
Find Related Datasets
Search by Tags
Click any tag below to search for similar datasets
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[
"021:15"
]
|
| contactPoint |
{
"fn": "Office of Highway Policy Information",
"@type": "vcard:Contact",
"hasEmail": "mailto:PolicyInfoFeedback@dot.gov"
}
|
| dataQuality |
true
|
| description | Annual road miles by functional system (National Highway System, other Federal-aid highways, and non-Federal-aid highways) and state for the 50 states, DC, and PR from the Highway Statistics Series table HM-15. Note: Missing 2009 and 2021. |
| distribution |
[
{
"@type": "dcat:Distribution",
"mediaType": "application/json",
"describedBy": "https://data.transportation.gov/api/views/xdi8-z7ty/columns.json",
"downloadURL": "https://data.transportation.gov/api/views/xdi8-z7ty/rows.json?accessType=DOWNLOAD",
"describedByType": "application/json"
},
{
"@type": "dcat:Distribution",
"mediaType": "application/rdf+xml",
"describedBy": "https://data.transportation.gov/api/views/xdi8-z7ty/columns.rdf",
"downloadURL": "https://data.transportation.gov/api/views/xdi8-z7ty/rows.rdf?accessType=DOWNLOAD",
"describedByType": "application/rdf+xml"
},
{
"@type": "dcat:Distribution",
"mediaType": "application/xml",
"describedBy": "https://data.transportation.gov/api/views/xdi8-z7ty/columns.xml",
"downloadURL": "https://data.transportation.gov/api/views/xdi8-z7ty/rows.xml?accessType=DOWNLOAD",
"describedByType": "application/xml"
},
{
"@type": "dcat:Distribution",
"mediaType": "text/csv",
"downloadURL": "https://data.transportation.gov/api/views/xdi8-z7ty/rows.csv?accessType=DOWNLOAD"
}
]
|
| identifier | https://data.transportation.gov/api/views/xdi8-z7ty |
| issued | 2026-02-02 |
| keyword |
[
"functional system",
"highway statistics",
"hppi",
"roadways"
]
|
| landingPage | https://data.transportation.gov/d/xdi8-z7ty |
| language |
[
"en-US"
]
|
| license | https://www.usa.gov/government-works |
| modified | 2026-04-23 |
| primaryITInvestmentUII | 021-099281808 |
| programCode |
[
"021:009"
]
|
| publisher |
{
"name": "Federal Highway Administration",
"@type": "org:Organization"
}
|
| systemOfRecords | https://www.govinfo.gov/content/pkg/FR-2006-05-03/pdf/E6-6510.pdf |
| temporal | 2000-01-01/2024-12-31 |
| theme |
[
"Transportation"
]
|
| title | Federal-aid Highway System Length by Functional System, 2000-2024 (HM-15) |
