Functionally obsolete 

504

Structurally deficient 

465

Aluminum, Wrought iron, or Cast iron

17

Concrete

284

Concrete continuous

268

Masonry

1

Prestressed concrete

2,179

Prestressed concrete continuous

17

Steel

988

Steel continuous

316

Wood or Timber

1,208

Highway

4,942

Pedestrian-bicycle

135

Second level (interchange)

335

Fourth level (interchange)

1

Highway

655

Pedestrian-bicycle

5

Railroad

202

Waterway

4,453

Waterway (relief)

25

Other

59

Arch - deck

15

Box beam or Girders - multiple

10

Box beam or Girders - single or spread

3

Channel beam

119

Culvert

316

Frame

6

Girder and Floorbeam system

84

Mixed types

2

Segmental box girder

1

Slab

340

Stringer / Multi-beam or Girder

3,547

Suspension

1

Tee beam

692

Truss - deck

8

Truss - thru

130

Other

4