FHWA-NTI-1 Specifications for the National Tunnel Inventory SNTI

OMB CONTROL NUMBER: 2125-XXXX
Paperwork Reduction Act Burden Statement
A federal agency may not conduct or sponsor, and a person is not required to respond to, nor shall a
person be subject to a penalty for failure to comply with a collection of information subject to the
requirements of the Paperwork Reduction Act unless that collection of information displays a currently
valid OMB Control Number. The OMB Control Number for this information collection is 2125-XXXX.
Public reporting for this collection of information is estimated to be approximately 40 hours per
response, including the time for reviewing instructions, searching existing data sources, gathering and
maintaining the data needed, completing and reviewing the collection of information.
All responses to this collection of information are mandatory (Title 23 USC section 144 and CFR 23 650,
Subpart E National Tunnel Inspection Standards). Send comments regarding this burden estimate or
any other aspect of this collection of information, including suggestions for reducing this burden to:
Information Collection Clearance Officer, Department of Transportation, Federal Highway
Administration, 1200 New Jersey Ave SE, Washington, D.C. 20590.

Section 4: Index of Inventory Items and
Elements
Inventory Items
Identification Items
Item ID
Inventory Item Name
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
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

4-2

Specifications for the National Tunnel Inventory

Classification Items
Item ID
Inventory Item Name
C.1
Owner
C.2
Operator
C.3
Direction of Traffic
C.4
Toll
C.5
NHS Designation
C.6
STRAHNET Designation
C.7
Functional Classification
C.8
Urban Code
Geometric Data Items
Item ID
Inventory Item Name
G.1
Tunnel Length
G.2
Minimum Vertical Clearance over Tunnel Roadway
G.3
Roadway Width, Curb-to-Curb
G.4
Left Sidewalk Width
G.5
Right Sidewalk Width
Inspection items
Item ID
Inventory Item Name
D.1
Routine Inspection Target Date
D.2
Actual Routine Inspection Date
D.3
Routine Inspection Interval
D.4
In-Depth Inspection
D.5
Damage Inspection
D.6
Special Inspection

Section 4: Index of Inventory Items and Elements

Load Rating and Posting Items
Item ID
Inventory Item Name
L.1
Load Rating Method
L.2
Inventory Load Rating Factor
L.3
Operating Load Rating Factor
L.4
Tunnel Load Posting Status
L.5
Posting Load – Gross
L.6
Posting Load – Axle
L.7
Posting Load – Type 3
L.8
Posting Load – Type 3S2
L.9
Posting Load – Type 3-3
L.10
Height Restriction
L.11
Hazardous Material Restriction
L.12
Other Restrictions
Navigation Items
Item ID
Inventory Item Name
N.1
Under Navigable Waterway
N.2
Navigable Waterway Clearance
N.3
Tunnel or Portal Island Protection from Navigation
Structure Type and Material Items
Item ID
Inventory Item Name
S.1
Number of Bores
S.2
Tunnel Shape
S.3
Portal Shapes
S.4
Ground Conditions
S.5
Complex

4-3

4-4

Specifications for the National Tunnel Inventory

Elements
Structural Section
Element
Type

Liners

Tunnel Roof
Girders

Columns/
Piles

Cross
Passageway

Interior Walls
Portal
Ceiling Slab

Ceiling
Girder

Element #
10000
10001
10002
10003
10004
10005
10006
10007
10009
10010
10011
10012
10019
10020
10021
10029
10030
10031
10033
10034
10035
10036
10039
10041
10049
10051
10055
10059
10061
10069
10070
10071
10072
10079

Element Name
Steel Tunnel Liner
Cast-in-Place Concrete Tunnel Liner
Precast Concrete Tunnel Liner
Shotcrete Tunnel Liner
Timber Tunnel Liner
Masonry Tunnel Liner
Unlined Rock Tunnel
Rock Bolt/Dowel
Other Tunnel Liner
Steel Tunnel Roof Girders
Concrete Tunnel Roof Girders
Prestressed Concrete Tunnel Roof Girders
Other Tunnel Roof Girders
Steel Columns/Piles
Concrete Columns/Piles
Other Columns/Piles
Steel Cross Passageway
Concrete Cross Passageway
Shotcrete Cross Passageway
Timber Cross Passageway
Masonry Cross Passageway
Unlined Rock Cross Passageway
Other Cross Passageway
Concrete Interior Walls
Other Interior Walls
Concrete Portal
Masonry Portal
Other Portal
Concrete Ceiling Slab
Other Ceiling Slab
Steel Ceiling Girder
Concrete Ceiling Girder
Prestressed Concrete Ceiling Girder
Other Ceiling Girder

Unit of Measure
area, ft2
area, ft2
area, ft2
area, ft2
area, ft2
area, ft2
area, ft2
each
area, ft2
length, ft
length, ft
length, ft
length, ft
each
each
each
length, ft
length, ft
length, ft
length, ft
length, ft
length, ft
length, ft
area, ft2
area, ft2
area, ft2
area, ft2
area, ft2
area, ft2
area, ft2
length, ft
length, ft
length, ft
length, ft

Section 4: Index of Inventory Items and Elements

Element
Type
Hangers
and
Anchorages
Ceiling
Panels
Invert Slab
Slab-onGrade
Invert
Girder

Joints

Gaskets

Element #

Element Name

4-5

Unit of Measure

10080

Steel Hangers and Anchorages

each

10089

Other Hangers and Anchorages

each

10090
10091
10099
10101
10109
10111
10119
10120
10121
10122
10129
10130
10131
10132
10133
10134
10135
10139
10140

Steel Ceiling Panels
Concrete Ceiling Panels
Other Ceiling Panels
Concrete Invert Slab
Other Invert Slab
Concrete Slab-on-Grade
Other Slab-on-Grade
Steel Invert Girder
Concrete Invert Girder
Prestressed Concrete Invert Girder
Other Invert Girder
Strip Seal Expansion Joint
Pourable Joint Seal
Compression Joint Seal
Assembly Joint With Seal
Open Expansion Joint
Assembly Joint Without Seal
Other Joint
Gaskets

area, ft2
area, ft2
area, ft2
area, ft2
area, ft2
area, ft2
area, ft2
length, ft
length, ft
length, ft
length, ft
length, ft
length, ft
length, ft
length, ft
length, ft
length, ft
length, ft
length, ft

Civil Section
Element
Type
Wearing
Surface
Traffic
Barrier
Pedestrian
Railing

Element #
10151
10158
10159
10160
10161
10169
10170
10171
10179

Element Name
Concrete Wearing Surface
Asphalt Wearing Surface
Other Wearing Surface
Steel Traffic Barrier
Concrete Traffic Barrier
Other Traffic Barrier
Steel Pedestrian Railing
Concrete Pedestrian Railing
Other Pedestrian Railing

Unit of Measure
area, ft2
area, ft2
area, ft2
length, ft
length, ft
length, ft
length, ft
length, ft
length, ft

4-6

Specifications for the National Tunnel Inventory

Mechanical Systems Section
Element
Type

Element #

Ventilation
System
Drainage
System
Emergency
Generator
System
Flood Gate

Element Name

Unit of Measure

10200
10201
10300
10301

Ventilation System
Fans
Drainage and Pumping System
Pumps

each
each
each
each

10400

Emergency Generator System

each

10475

Flood Gate

each

Electrical Systems Section
Element
Type
Electrical
Distribution
Emergency
Distribution

Element #

Tunnel
Lighting
Emergency
Lighting

Element Name

Unit of Measure

10500

Electrical Distribution System

each

10550

Emergency Distribution System

each

10600
10601
10620
10621

Tunnel Lighting Systems
Tunnel Lighting Fixtures
Emergency Lighting Systems
Emergency Lighting Fixtures

each
each
each
each

Fire/Life Safety/Security Systems Section
Element Type
Fire Detection
Fire Protection
Emergency
Communications
Operations and
Security

Element
#
10650
10700

Element Name

Unit of Measure

Fire Detection System
Fire Protection System

each
each

10750

Emergency Communications System

each

10800

Tunnel Operations and Security System

each

Section 4: Index of Inventory Items and Elements

4-7

Signs Section
Element
Type
Traffic
Guidance
Egress
Signs
Variable
Message
Boards
Lane
Signal

Element #

Element Name

Unit of Measure

10850

Traffic Sign

each

10870

Egress Sign

each

10890

Variable Message Board

each

10910
10911

Lane Signal
Lane Signal Fixture

each
each

Protective Systems Section
Element
Type

Element #

Protective
Coating

10950
10951
10952

Element Name
Steel Corrosion Protective Coating
Concrete Corrosion Protective Coating
Fire Protective Coating

Unit of Measure
area, ft2
area, ft2
area, ft2