1|Page
NHI Safety Inspection of In-Service Bridges TEST FINAL EXAM
AND PRACTICE EXAM 20262027 BANK 2 VERSIONS
QUESTIONS WITH DETAILED VERIFIED ANSWERS EXAM
QUESTIONS WILL COME FROM HERE (100% CORRECT
ANSWERS A+ GRADED
Clacking - ANSWERS--the sound of delaminated concrete
Pinging - ANSWERS--the sound of "sound" concrete
Where are shear key joints? - ANSWERS--between pre-cast deck panels
Where can you find anchorage zones? - ANSWERS--precast deck tie
rods
flexure cracks are primarily what direction compared to the primary
reinforcement? - ANSWERS--perpendicular
Main inspection area for FRP bridges? - ANSWERS--Joints
Assembly joint without seal- sliding plate - ANSWERS--two steel plates
sliding on top of one another with maximum movement of 4 inches
,2|Page
Compression joint seal - ANSWERS--rectangle of neoprene with a
honeycomb cross section. Can handle movement of 2 inches
pourable joint seal - ANSWERS--made of three materials (backing
material, joint filler, and a poured joint sealant) and can only
accommodate movement of 1/4 inch. Used on short spans
strip seal expansion joint - ANSWERS--two slotted steel anchorages cast
into a deck or back wall. A neoprene seal fits into the grooves to span
the joint. max movement of 4 inches
Cellular joint seal - ANSWERS--different than compression because of
material used to close joint. Made up of closed-cell foam that allows
the joint to move in different directions. Allows for both parallel and
perpendicular joint movement
Assembly joint with seal- plank - ANSWERS--steel reinforced neoprene
that supports vehicular loads over the joint and allow for movement up
to 4 inches
Assembly joint with seal- sheet - ANSWERS--two blocks of steel
reinforced neoprene. thin sheet of neoprene spans the joint and
connects the two blocks. Allows for up to 4 inches
,3|Page
Open expansion joint - ANSWERS--gap between the bridge deck and
the back wall of the abutment or adjacent deck section. usually found
on short span bridges, usually unprotected
Assembly joint without seal- finger plate - ANSWERS--tooth plate joint,
two steel plates that have interlocking fingers. usually on longer spans.
can accommodate movement from 4 to 24 inches
Drainage system - ANSWERS--move water away from specific locations
(to protect the bridge)
Grade and cross slope - ANSWERS--directs the runoff to the inlets and
helps eliminate or reduce ponding
Inlets - ANSWERS--receives water
Outlet pipes - ANSWERS--leads water away from the drain
Downspout pipes - ANSWERS--directs deck drainage from outlet pipe
Cleanout plugs - ANSWERS--removable plug in piping system that
allows access for cleaning downspout pipes
, 4|Page
Drainage troughs - ANSWERS--located under open joints to divert
runoff away from components
Scupper - ANSWERS--inlet on a bridge that receives water, with grate or
perforated cover to keep out large debris
Deck Drains - ANSWERS--open holes or embedded tubes similar to
scuppers
Downspout - ANSWERS--directs drainage to nearby storm drain
Weep holes - ANSWERS--small drainage holes found in abutment stems
and retaining walls which allow water to drain from behind abutment
Underdrains - ANSWERS--perforated pipes routed along back face of
the abutment and channeled to a nearby waterway or storm water
drainage system
Aerial obstruction lighting - ANSWERS--used to alert aircraft that a
hazard exists below
Navigation lighting - ANSWERS--used to safe control a waterway
NHI Safety Inspection of In-Service Bridges TEST FINAL EXAM
AND PRACTICE EXAM 20262027 BANK 2 VERSIONS
QUESTIONS WITH DETAILED VERIFIED ANSWERS EXAM
QUESTIONS WILL COME FROM HERE (100% CORRECT
ANSWERS A+ GRADED
Clacking - ANSWERS--the sound of delaminated concrete
Pinging - ANSWERS--the sound of "sound" concrete
Where are shear key joints? - ANSWERS--between pre-cast deck panels
Where can you find anchorage zones? - ANSWERS--precast deck tie
rods
flexure cracks are primarily what direction compared to the primary
reinforcement? - ANSWERS--perpendicular
Main inspection area for FRP bridges? - ANSWERS--Joints
Assembly joint without seal- sliding plate - ANSWERS--two steel plates
sliding on top of one another with maximum movement of 4 inches
,2|Page
Compression joint seal - ANSWERS--rectangle of neoprene with a
honeycomb cross section. Can handle movement of 2 inches
pourable joint seal - ANSWERS--made of three materials (backing
material, joint filler, and a poured joint sealant) and can only
accommodate movement of 1/4 inch. Used on short spans
strip seal expansion joint - ANSWERS--two slotted steel anchorages cast
into a deck or back wall. A neoprene seal fits into the grooves to span
the joint. max movement of 4 inches
Cellular joint seal - ANSWERS--different than compression because of
material used to close joint. Made up of closed-cell foam that allows
the joint to move in different directions. Allows for both parallel and
perpendicular joint movement
Assembly joint with seal- plank - ANSWERS--steel reinforced neoprene
that supports vehicular loads over the joint and allow for movement up
to 4 inches
Assembly joint with seal- sheet - ANSWERS--two blocks of steel
reinforced neoprene. thin sheet of neoprene spans the joint and
connects the two blocks. Allows for up to 4 inches
,3|Page
Open expansion joint - ANSWERS--gap between the bridge deck and
the back wall of the abutment or adjacent deck section. usually found
on short span bridges, usually unprotected
Assembly joint without seal- finger plate - ANSWERS--tooth plate joint,
two steel plates that have interlocking fingers. usually on longer spans.
can accommodate movement from 4 to 24 inches
Drainage system - ANSWERS--move water away from specific locations
(to protect the bridge)
Grade and cross slope - ANSWERS--directs the runoff to the inlets and
helps eliminate or reduce ponding
Inlets - ANSWERS--receives water
Outlet pipes - ANSWERS--leads water away from the drain
Downspout pipes - ANSWERS--directs deck drainage from outlet pipe
Cleanout plugs - ANSWERS--removable plug in piping system that
allows access for cleaning downspout pipes
, 4|Page
Drainage troughs - ANSWERS--located under open joints to divert
runoff away from components
Scupper - ANSWERS--inlet on a bridge that receives water, with grate or
perforated cover to keep out large debris
Deck Drains - ANSWERS--open holes or embedded tubes similar to
scuppers
Downspout - ANSWERS--directs drainage to nearby storm drain
Weep holes - ANSWERS--small drainage holes found in abutment stems
and retaining walls which allow water to drain from behind abutment
Underdrains - ANSWERS--perforated pipes routed along back face of
the abutment and channeled to a nearby waterway or storm water
drainage system
Aerial obstruction lighting - ANSWERS--used to alert aircraft that a
hazard exists below
Navigation lighting - ANSWERS--used to safe control a waterway
