NHI UW INSPECTION EXAM
QUESTIONS & VERIFIED COMPLETE
SOLUTIONS
Max Interval between above water inspections - Correct Answer ✔✔ 24 Mo
Team leaders are required to have - Correct Answer ✔✔ FHWA approved
comprehensive bridge inspection course
A bridge is defined as - Correct Answer ✔✔ A structure carrying traffic and having a
clear span of 20+ ft
Two types of bridge inspections by NBIS are - Correct Answer ✔✔ Routine and Special
inspections
FHWA routine underwater inspections require - Correct Answer ✔✔ 100% Level I
inspections
Necessary for the galvanic corrosion process - Correct Answer ✔✔ Electric current,
electrolytes, and oxygen
Erosive action of flowing water excavating soil in CBs and around SSUs - Correct
Answer ✔✔ Scour
Two methods of reporting bridge inspection results - Correct Answer ✔✔ Element level
and NBI condition rating methods
Material characteristic to deform under constant load intensity is - Correct Answer ✔✔
Creep
Wading is acceptable in - Correct Answer ✔✔ <3' of water
Underwater acoustic imaging includes - Correct Answer ✔✔ Scanning sonar
Cleaning bands at WL mudline amd mid depth on piles and piers are - Correct Answer
✔✔ Level II inspection
Teredo attack produces - Correct Answer ✔✔ Internal voids
Concrete spauling is associated with - Correct Answer ✔✔ Rebar corrosion
JHA should always - Correct Answer ✔✔ Be complete before a job
, What if an NBI Item 113 is rated U - Correct Answer ✔✔ Develop a POA
Below footing and structural when piles aren't present - Correct Answer ✔✔ Seals
SSU has a Monolithic footing - Correct Answer ✔✔ Piers
Structural safety of a bridge must be determined with - Correct Answer ✔✔ Certainty
Three advantages of SCUBA - Correct Answer ✔✔ Maneuverable, light weight, no
elaborate support ops
Limitations if scuba - Correct Answer ✔✔ Limited air, max depth 130, 3 person team
min
5 inspection techniques in lieu of diving - Correct Answer ✔✔ Rov, Sonar, fathometer,
multibeam, evid, ground penetration radar
Types of inspections - Correct Answer ✔✔ Initial, routine, special, fracture critical, in
depth, underwater, damage
UW routine inspections require - Correct Answer ✔✔ 100% level I, 10% level II, and
scour inspection
Four factors that influence UW inspection recommendations - Correct Answer ✔✔ Age,
scour susceptibility, configuration, and location
4 types of NBIS UW inspections - Correct Answer ✔✔ Initial, routine, in depth, damage
When must mult. Culverts be inspected as a bridge - Correct Answer ✔✔ Clearspan is
20'
3 types of loads bridges are subject to - Correct Answer ✔✔ Dead live and secondary
Purpose of a seal - Correct Answer ✔✔ Seal bottom of a cofferdam
3 uw inspection techniques - Correct Answer ✔✔ Wading diving advanced tech
Does NBIS have dive safety regs - Correct Answer ✔✔ No
Anodes sacrifice to - Correct Answer ✔✔ Cathodes
To worst places for corrosion - Correct Answer ✔✔ Splashzone and brackish water
Anodes shall be replaced after - Correct Answer ✔✔ 50% loss or stamped writing is
gone
QUESTIONS & VERIFIED COMPLETE
SOLUTIONS
Max Interval between above water inspections - Correct Answer ✔✔ 24 Mo
Team leaders are required to have - Correct Answer ✔✔ FHWA approved
comprehensive bridge inspection course
A bridge is defined as - Correct Answer ✔✔ A structure carrying traffic and having a
clear span of 20+ ft
Two types of bridge inspections by NBIS are - Correct Answer ✔✔ Routine and Special
inspections
FHWA routine underwater inspections require - Correct Answer ✔✔ 100% Level I
inspections
Necessary for the galvanic corrosion process - Correct Answer ✔✔ Electric current,
electrolytes, and oxygen
Erosive action of flowing water excavating soil in CBs and around SSUs - Correct
Answer ✔✔ Scour
Two methods of reporting bridge inspection results - Correct Answer ✔✔ Element level
and NBI condition rating methods
Material characteristic to deform under constant load intensity is - Correct Answer ✔✔
Creep
Wading is acceptable in - Correct Answer ✔✔ <3' of water
Underwater acoustic imaging includes - Correct Answer ✔✔ Scanning sonar
Cleaning bands at WL mudline amd mid depth on piles and piers are - Correct Answer
✔✔ Level II inspection
Teredo attack produces - Correct Answer ✔✔ Internal voids
Concrete spauling is associated with - Correct Answer ✔✔ Rebar corrosion
JHA should always - Correct Answer ✔✔ Be complete before a job
, What if an NBI Item 113 is rated U - Correct Answer ✔✔ Develop a POA
Below footing and structural when piles aren't present - Correct Answer ✔✔ Seals
SSU has a Monolithic footing - Correct Answer ✔✔ Piers
Structural safety of a bridge must be determined with - Correct Answer ✔✔ Certainty
Three advantages of SCUBA - Correct Answer ✔✔ Maneuverable, light weight, no
elaborate support ops
Limitations if scuba - Correct Answer ✔✔ Limited air, max depth 130, 3 person team
min
5 inspection techniques in lieu of diving - Correct Answer ✔✔ Rov, Sonar, fathometer,
multibeam, evid, ground penetration radar
Types of inspections - Correct Answer ✔✔ Initial, routine, special, fracture critical, in
depth, underwater, damage
UW routine inspections require - Correct Answer ✔✔ 100% level I, 10% level II, and
scour inspection
Four factors that influence UW inspection recommendations - Correct Answer ✔✔ Age,
scour susceptibility, configuration, and location
4 types of NBIS UW inspections - Correct Answer ✔✔ Initial, routine, in depth, damage
When must mult. Culverts be inspected as a bridge - Correct Answer ✔✔ Clearspan is
20'
3 types of loads bridges are subject to - Correct Answer ✔✔ Dead live and secondary
Purpose of a seal - Correct Answer ✔✔ Seal bottom of a cofferdam
3 uw inspection techniques - Correct Answer ✔✔ Wading diving advanced tech
Does NBIS have dive safety regs - Correct Answer ✔✔ No
Anodes sacrifice to - Correct Answer ✔✔ Cathodes
To worst places for corrosion - Correct Answer ✔✔ Splashzone and brackish water
Anodes shall be replaced after - Correct Answer ✔✔ 50% loss or stamped writing is
gone
