Functionally obsolete 

3,086

Structurally deficient 

1,790

Aluminum, Wrought iron, or Cast iron

225

Concrete

1,106

Concrete continuous

2,726

Prestressed concrete

4,542

Prestressed concrete continuous

728

Steel

7,392

Steel continuous

1,248

Wood or Timber

570

Other

3

Highway

17,017

Pedestrian-bicycle

1,229

Railroad

241

Second level (interchange)

1,213

Third level (interchange)

14

Fourth level (interchange)

1

Other

5

Highway

3,243

Pedestrian-bicycle

5

Railroad

719

Waterway

14,820

Waterway (relief)

9

Other

62

Arch - deck

83

Arch - thru

6

Box beam or Girders - multiple

236

Box beam or Girders - single or spread

23

Channel beam

315

Culvert

4,894

Frame

35

Girder and Floorbeam system

154

Mixed types

4

Movable - bascule

7

Movable - lift

1

Movable - swing

7

Segmental box girder

12

Slab

2,877

Stringer / Multi-beam or Girder

9,211

Suspension

2

Tee beam

612

Truss - deck

3

Truss - thru

50

Other

8