FHWA NTI Data Schema
Version 1.0 - 10-05-2017
I1 - Tunnel Number
I2 - Tunnel Name
I3 - State Code
I4 - County Code
I5 - Place Code
I6 - Highway District
I7 - Route Number
I8 - Route Direction
I9 - Route Type
I10 - Facility Carried
I11 - LRS Route ID
I12 - LRS Mile Point
I13 - Tunnel Portal's Latitude
I14 - Tunnel Portal's Longitude
I15 - Border Tunnel State or Country Code
I16 - Border Tunnel Financial Responsibility
I17 - Border Tunnel Number
I18 - Border Tunnel Inspection Responsibility
A1 - Year Built
A2 - Year Rehabilitated
A3 - Total Number of Lanes
A4 - Annual Average Daily Traffic
A5 - Annual Average Daily Truck Traffic
A6 - Year of Average Daily Traffic
A7 - Detour Length
A8 - Service in Tunnel
C1 - Owner
C2 - Operator
C3 - Direction of Traffic
C4
C5 - NHS Designation
C6 - STRAHNET Designation
C7 - Functional Classification
C8 - Urban Code
G1 - Tunnel Length
G2 - Minimum Vertical Clearance over Tunnel Roadway
G3 - Roadway Width, Curb-to-Curb
G4 - Left Curb Widths
G5 - Right Curb Widths
D1 - Routine Inspection Target Date
D2 - Actual Routine Inspection Date
D3 - Routine Inspection Interval
D4 - In-Depth Inspection
D5 - Damage Inspection
D6 - Special Inspection
L1 - Load Rating Method
L2 - Inventory Load Rating Factor
L3 - Operating Load Rating Factor
L4 - Tunnel Load Posting Status
L5 - Posting Load - Gross
L6 - Posting Load - Axle
L7 - Posting Load - Type 3
L8 - Posting Load - Type 3S2
L9 - Posting Load - Type 3-3
L10 - Height Restriction
L11 - Hazardous Material Restriction
L12 - Other Restrictions
N1 - Under Navigable Waterway
N2 - Navigable Waterway Clearance
N3 - Tunnel or Portal Island Protection from Navigation
S1 - Number of Bores
S2 - Tunnel Shape
S3 - Portal Shapes
S4 - Ground Conditions
S5 - Complex
I1 - Tunnel Number
I3 - State Code
EN short for Element Number
EPN short for Element Parent Number
TOTALQTY short for Element Total Quantity
CS1 short for Element Quantity Condition State 1
CS2 short for Element Quantity Condition State 2
CS3 short for Element Quantity Condition State 3
CS4 short for Element Quantity Condition State 4