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Fields for table: INV_AGE

Field NameCodesData TypeUnitsTest ProtocolDescription
SHRP_ID

VARCHAR2(4)


Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
LANE_ADDED_NO

NUMBER(1)


Lane number of added lane.
RECORD_STATUS

VARCHAR2(1)


A code indicating the general quality of the data.
STATE_CODE
STATE_PROVINCENUMBER(2)


Numerical code for state or province. U.S. codes are consistent with Federal Information Processing Standards.
CONSTRUCTION_NO

NUMBER(2)


Event number used to relate changes in pavement structure with other time dependent data elements. This field is set to 1 when a test section is initially accepted into LTPP and is incremented with each change to the layer structure.
CONSTRUCTION_DATE

DATE


Date of latest (re/construction. The date is entered as month and year only.
TRAFFIC_OPEN_DATE

DATE


Month and year pavement was originally opened to traffic.
CONSTRUCTION_COST

NUMBER(5)
1000s $/lane mi

Average original (re/construction cost per lane-mile.
YEAR_WIDENED

NUMBER(4)
yr

Last two digits of the year when the roadway was widened.
ORIGINAL_NO_LANES

NUMBER(1)


Code indicating original number of lanes.
FINAL_NO_LANES

NUMBER(1)


Number of lanes in survey direction subsequent to roadway widening