1.1 |
Data related to the typical environmental, anti-icing, and traffic conditions at the bridge site. |
|
|
2. |
Onsite Equipment and Personnel Requirements |
|
2.1 |
Equipment: |
|
2.1.1 |
Computer. |
|
2.1.2 |
Scanner. |
|
2.2 |
Personnel: PRE-PL-LO-005, Personnel Qualifications. |
|
|
3. |
Methodology |
|
3.1 |
Work with the bridge owner to obtain values for average daily traffic (ADT), average daily truck traffic (ADTT), and amount and type of anti-icing agent, (data collection table items 8–15), beginning with the year construction of the bridge was completed and for each subsequent year that data are available. |
|
3.2 |
Obtain marine environment, weather, and water flow data, beginning with the year construction of the bridge was completed and for each subsequent year that data are available: |
|
3.2.1 |
Calculate the straight line distance from the centerline of the bridge to the nearest body of saltwater (miles) (data collection table item 16). |
|
3.2.2 |
Obtain water flow data using publicly available Federal Emergency Management Agency (FEMA) flood maps and National Oceanic and Atmospheric Administration (NOAA) historic flood data (data collection table items 18–26). |
|
3.3 |
If the bridge information exists only in paper form, scan that information into an electronic format so it can be stored in the LTBP Bridge Portal. |
|
3.4 |
Storing data, documents, and images: |
|
3.4.1 |
FLD-DS-LS-001, Data, Document, and Image Storage—Local, for local storage. |
|
3.4.2 |
FLD-DS-RS-001, Data, Document, and Image Storage—Remote, for remote storage. |
|
3.5 |
Reporting: Transfer all metadata, data, documents, and images to FHWA, and/or upload all metadata, data, documents, and images into the LTBP Bridge Portal. |
|
|
4. |
Data Collection Table |
|
4.1 |
Table: |
|
# |
Field Name |
Data Type |
Accuracy |
Unit |
Field Description |
Row Color |
1 |
State |
Text |
|
|
State Code; e.g., Virginia = VA |
Green |
2 |
NBI structure number |
Text |
|
|
Item 8, structure number; from NBI Coding Guide |
Green |
3 |
Structure name |
Text |
|
|
Descriptive name for the bridge; e.g., Route 15 SB over I–66 |
Green |
4 |
Protocol name |
Text |
|
|
Title of the protocol |
Green |
5 |
Protocol version |
Text |
Month and year |
|
Month and year the protocol version was published; e.g., May 2015 |
Green |
6 |
Personnel performing data collection activities |
Text |
|
|
First name(s) Last name(s) |
Green |
7 |
Date data were collected |
Text |
Exact date |
|
mm/dd/yyyy |
Green |
Traffic Data |
Pink |
8 |
Year ADT, ADTT, and WIM data were recorded |
Text |
|
|
yyyy |
Blue |
9 |
ADT |
Number |
100 |
Vehicles/day |
|
Yellow |
10 |
ADTT |
Number |
100 |
Vehicles/day |
|
Yellow |
11 |
Comments |
Text |
|
|
If WIM data is provided, provide the source of the WIM data |
Orange |
Anti-icing Practices and Marine Environment |
Pink |
12 |
Automated anti-icing system in use at bridge site |
Predefined list |
|
|
Yes or No |
Yellow |
13 |
Description of anti-icing system |
Text |
|
|
Manufacturer, model name and number |
Yellow |
14 |
Type of anti-icing agent |
Text |
|
|
Indicate “None” or specify name of the anti-icing agent |
Yellow |
15 |
Quantity of anti-icing agent per year applied to the bridge |
Number |
1 |
lbs |
See section 6.2. |
Yellow |
16 |
Distance from bridge centerline to saltwater |
Number |
1 |
mi |
Straight line distance to the nearest body of saltwater |
Yellow |
17 |
Comments |
Text |
|
|
|
Orange |
Waterway Flow Data (For Bridges Crossing Waterways) |
Pink |
18 |
FEMA flood plain designation |
Text |
|
|
|
Yellow |
19 |
FEMA base flood elevation at the location of the bridge site |
Number |
1 |
ft |
|
Yellow |
20 |
100-year design flood velocity |
Number |
1 |
ft3/sec |
|
Yellow |
21 |
Maximum known flow velocity |
Number |
1 |
ft3/sec |
|
Yellow |
22 |
Historical flood events at the structure location |
Text |
|
|
Record how many 100-year-or-greater flood events have occurred at the bridge site and the years those events occurred. Also, record the crest height if known. |
Yellow |
23 |
Year recorded |
Text |
Year |
|
yyyy |
Blue |
24 |
Average flow velocity |
Number |
1 |
ft3/sec |
|
Yellow |
25 |
Peak flow velocity |
Number |
1 |
ft3/sec |
|
Yellow |
26 |
Comments |
Text |
|
|
|
Orange |
|
4.2 |
Table Key: |
|
Column Descriptions |
# |
Sequential number of data item |
Field Name |
Data field name |
Data Type |
Type of data, such as text, number, predefined list, binary large object (BLOB), or PDF file |
Accuracy |
Accuracy to which the data are recorded |
Unit |
Unit in which a measurement is taken and recorded |
Field Description |
Commentary on the data or list of items in a predefined list |
Row Color Key |
Green |
Data items only entered once for each protocol for each day the protocol is applied |
Pink |
Logical breakdown of data by elements or defect types (not always used) |
Blue |
Data identifying the element being evaluated or the type of defect being identified |
Yellow |
LTBP data reported individually for each element or defect identified |
Orange |
Comments on the data collection or data entered |
|
|
5. |
Criteria for Data Validation |
|
5.1 |
Where feasible, data will be validated using standard error checking within the Bridge Portal. |
|
|
6. |
Commentary/Background |
|
6.1 |
This protocol provides guidance for collecting data that help characterize the environmental, anti-icing, and traffic conditions at the bridge. This information is used to evaluate the relative impact of these factors on the performance of the bridge and subsequently account for these factors in the development of deterioration models. |
|
6.2 |
Historic weather data on temperature, humidity, rainfall, snowfall, solar radiation, and wind speed will be collected under a protocol to be developed at a future date. |
|
6.3 |
If the quantity of anti-icing agent per year applied to the bridge (data collection table item 16) is not available, then take the following steps: |
|
6.3.1 |
Estimate the amount of anti-icing agent per year used over the route that the bridge carries. |
|
6.3.2 |
Use the amount calculated in section 6.3.1, and prorate it for the length of the bridge. |
|
|
7. |
References |
|
7.1 |
LTBP Protocols: |
|
7.1.1 |
PRE-PL-LO-005, Personnel Qualifications. |
|
7.1.2 |
FLD-DS-LS-001, Data, Document, and Image Storage—Local. |
|
7.1.3 |
FLD-DS-RS-001, Data, Document, and Image Storage—Remote. |
|
7.2 |
External: |
|
7.2.1 |
National Oceanic and Atmospheric Administration (NOAA): http://www.noaa.gov/ |
|
7.2.2 |
Modern Era-Retrospective Analysis for Research and Applications (MERRA): http://gmao.gsfc.nasa.gov/research/merra/intro.php |
|
7.2.3 |
Federal Emergency Management Administration (FEMA): http://www.fema.gov/ |
|