Functionally obsolete 

1,581

Structurally deficient 

1,234

Aluminum, Wrought iron, or Cast iron

62

Concrete

1,479

Concrete continuous

267

Masonry

5

Prestressed concrete

4,138

Prestressed concrete continuous

31

Steel

4,564

Steel continuous

547

Wood or Timber

661

Other

3

Building or plaza

3

Highway

11,092

Pedestrian-bicycle

1,668

Railroad

377

Second level (interchange)

30

Third level (interchange)

30

Fourth level (interchange)

4

Other

14

Highway

3,325

Pedestrian-bicycle

36

Railroad

412

Waterway

8,103

Waterway (relief)

3

Other

48

Arch - deck

86

Arch - thru

15

Box beam or Girders - multiple

2,579

Box beam or Girders - single or spread

291

Channel beam

10

Culvert

1,755

Frame

33

Girder and Floorbeam system

344

Movable - bascule

20

Movable - lift

1

Movable - swing

3

Orthotropic

2

Segmental box girder

5

Slab

653

Stayed girder

1

Stringer / Multi-beam or Girder

5,058

Suspension

1

Tee beam

752

Truss - deck

6

Truss - thru

114

Other

28