Functionally obsolete 

4,587

Structurally deficient 

1,388

Aluminum, Wrought iron, or Cast iron

20

Concrete

5,997

Concrete continuous

10,139

Masonry

32

Prestressed concrete

3,204

Prestressed concrete continuous

3,272

Steel

2,796

Steel continuous

393

Wood or Timber

682

Other

20

Building or plaza

5

Highway

25,270

Pedestrian-bicycle

7,315

Railroad

694

Second level (interchange)

124

Third level (interchange)

30

Fourth level (interchange)

11

Other

59

Highway

8,985

Pedestrian-bicycle

82

Railroad

1,334

Waterway

16,767

Waterway (relief)

47

Other

497

Arch - deck

459

Arch - thru

20

Box beam or Girders - multiple

8,236

Box beam or Girders - single or spread

386

Channel beam

37

Culvert

3,511

Frame

81

Girder and Floorbeam system

270

Mixed types

2

Movable - bascule

17

Movable - lift

5

Movable - swing

16

Orthotropic

3

Segmental box girder

10

Slab

5,971

Stringer / Multi-beam or Girder

4,144

Suspension

16

Tee beam

2,991

Truss - deck

62

Truss - thru

271

Other

47