Functionally obsolete 

1,396

Structurally deficient 

1,247

Aluminum, Wrought iron, or Cast iron

36

Concrete

1,174

Concrete continuous

264

Masonry

20

Prestressed concrete

2,177

Prestressed concrete continuous

123

Steel

1,951

Steel continuous

1,544

Wood or Timber

86

Other

184

Highway

7,212

Pedestrian-bicycle

636

Railroad

237

Second level (interchange)

6

Third level (interchange)

5

Fourth level (interchange)

1

Other

82

Highway

1,314

Pedestrian-bicycle

5

Railroad

309

Waterway

6,545

Other

40

Arch - deck

407

Arch - thru

8

Box beam or Girders - multiple

1,883

Box beam or Girders - single or spread

52

Channel beam

116

Culvert

541

Frame

58

Girder and Floorbeam system

260

Mixed types

1

Orthotropic

2

Segmental box girder

4

Slab

531

Stayed girder

3

Stringer / Multi-beam or Girder

3,155

Suspension

3

Tee beam

107

Truss - deck

10

Truss - thru

202

Other

216