aging
asia
bridge
bridge girder
business
character space
concrete
construction
copy space
corrosion
cross girder
deterioration
elevated
floorboard
high speed
horizontal structure
infrastructure
infrastructure maintenance
inside
inside the bridge
inspection
inspection path
japan
japanese
japanese technology
life extension plan
longer life
main girder
maintenance
painted
painted surface
public works
renovation
repair
road
road bridge
road construction
road maintenance
rust
steel bridge
steel material
surface
technology
text space
traffic
traffic image
traffic volume
transportation
transportation infrastructure
transportation network