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OMB Control No. 2125-0640
National Tunnel Inventory – Inventory and Element Data
Inventory Data
Identification Items
Item ID
Inventory Item Name
Code
I.1
Tunnel Number
I.2
Tunnel Name
I.3
State Code
I.4
County Code
I.5
Place Code
I.6
Highway Agency District
I.7
Route Number
I.8
Route Direction
I.9
Route Type
I.10
Facility Carried
I.11
LRS Route ID
I.12
LRS Mile Point
I.13
Tunnel Portal’s Latitude
I.14
Tunnel Portal’s Longitude
I.15
Border Tunnel State or Country Code
I.16
Border Tunnel Financial Responsibility
I.17
Border Tunnel Number
I.18
Border Tunnel Inspection Responsibility
Age and Service Items
Item ID
Inventory Item Name
Code
A.1
Year Built
A.2
Year Rehabilitated
A.3
Total Number of Lanes
A.4
Average Daily Traffic
A.5
Average Daily Truck Traffic
A.6
Year of Average Daily Traffic
A.7
Detour Length
A.8
Service in Tunnel