Functionally obsolete 

1,573

Structurally deficient 

3,460

Aluminum, Wrought iron, or Cast iron

3

Concrete

9,092

Concrete continuous

941

Masonry

12

Prestressed concrete

4,510

Prestressed concrete continuous

82

Steel

7,176

Steel continuous

992

Wood or Timber

446

Other

6

Building or plaza

1

Highway

23,037

Pedestrian-bicycle

803

Railroad

159

Second level (interchange)

15

Third level (interchange)

2

Other

23

Highway

2,102

Pedestrian-bicycle

6

Railroad

345

Waterway

20,730

Waterway (relief)

285

Other

21

Arch - deck

109

Arch - thru

16

Box beam or Girders - multiple

68

Box beam or Girders - single or spread

8

Channel beam

30

Culvert

7,240

Frame

80

Girder and Floorbeam system

173

Orthotropic

1

Segmental box girder

6

Slab

2,185

Stringer / Multi-beam or Girder

12,094

Tee beam

780

Truss - deck

5

Truss - thru

396

Other

69