Geography Tool Shed : Bridges

United States National Bridge Inventory

Bridge count: 250

Click on a count to view bridges.

Status

Functionally obsolete	18
Structurally deficient	63

Material

Aluminum, Wrought iron, or Cast iron	1
Concrete	67
Concrete continuous	5
Masonry	8
Prestressed concrete	104
Prestressed concrete continuous	1
Steel	60
Steel continuous	4

Service on bridge

Highway	250
Pedestrian-bicycle	18

Service under bridge

Highway	9
Waterway	243

Design

Arch - deck	15
Box beam or Girders - multiple	50
Box beam or Girders - single or spread	48
Channel beam	1
Culvert	16
Frame	1
Girder and Floorbeam system	2
Slab	18
Stringer / Multi-beam or Girder	67
Tee beam	29
Truss - thru	3

Data from the United States National Bridge Inventory (NBI) (2016)