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Bridge
Types, Lengths and Ages
On
this page:
• Types
of Bridges
• Length
of Bridges
• Age
of Bridges
TYPES
OF BRIDGES
| CONCRETE
AND PRE-STRESSED CONCRETE |
| BRIDGE TYPE |
NUMBER OF
BRIDGES
|
| CONCRETE BOX BEAM |
79
|
| CONCRETE CHANNEL |
50
|
| CONCRETE CULVERT |
298
|
| CONCRETE DECK ARCH |
490
|
| CONCRETE FRAME |
13
|
| CONCRETE GIRDER |
14
|
| CONCRETE SLAB |
449
|
| CONCRETE STRINGER |
43
|
| CONCRETE T-BEAM |
142
|
| CONCRETE THRU ARCH |
2
|
| OTHER CONCRETE |
7
|
| PRE-CAST CONCRETE BOX BEAM |
1,091
|
| PRE-CAST CONCRETE CHANNEL |
83
|
| PRE-CAST CONCRETE CULVERT |
3
|
| PRE-CAST CONCRETE FRAME |
1
|
| PRE-CAST CONCRETE SLAB |
102
|
| PRE-CAST CONCRETE STRINGER |
53
|
| PRE-CAST CONCRETE T-BEAM |
1
|
| PRE-CAST CONCRETE STAYED
GIRDER |
1
|
| OTHER PRE-CAST CONCRETE |
5
|
| STEEL,
ALUMINUM, AND WROUGHT OR CAST IRON |
| BRIDGE
TYPE |
NUMBER OF
BRIDGES
|
| STEEL BOX
BEAM/GIRDER |
27
|
| STEEL CHANNEL |
1
|
| STEEL
CULVERT |
100
|
| STEEL DECK ARCH |
4
|
| STEEL DECK TRUSS |
36
|
| STEEL FRAME |
3
|
| STEEL
GIRDER/FLOORBEAM |
366
|
| STEEL ORTHOTROPIC |
1
|
| STEEL PONY TRUSS |
124
|
| STEEL STAYED
GIRDER |
1
|
| STEEL STRINGER |
2,404
|
| STEEL SUSPENSION |
5
|
| STEEL THROUGH ARCH |
4
|
| STEEL THROUGH
TRUSS |
197
|
| OTHER STEEL |
9
|
| ALUM. OR
WROUGHT/CAST IRON CULVERT |
12
|
| ALUM. OR
WROUGHT/CAST IRON DECK ARCH |
1
|
| ALUM. OR
WROUGHT/CAST IRON DECK TRUSS |
0
|
| ALUM. OR
WROUGHT/CAST IRON PONY TRUSS |
1
|
| TIMBER
AND OTHER MISC. |
| BRIDGE
TYPE |
NUMBER OF
BRIDGES
|
| TIMBER BOX BEAM |
25
|
| TIMBER FRAME |
2
|
| TIMBER PONY TRUSS |
1
|
| TIMBER SLAB |
13
|
| TIMBER STRINGER |
24
|
| TIMBER T-BEAM |
7
|
| TIMBER THRU TRUSS |
2
|
| OTHER TIMBER |
4
|
| MASONRY ARCH |
10
|
| OTHER CHANNEL |
1
|
| OTHER DECK ARCH |
1
|
| OTHER
MISCELLANEOUS |
0
|
LENGTH OF BRIDGES
| STATE
SYSTEM HIGHWAY BRIDGES |
| BRIDGE
LENGTH |
NUMBER OF
BRIDGES
|
PERCENT OF
TOTAL
|
| 20 - 50 Feet |
2,908
|
46.0
|
| 51 - 100 Feet |
1,357
|
21.5
|
| 101 - 150 Feet |
690
|
10.9
|
| 151 - 200 Feet |
377
|
6.0
|
| 201 - 300 Feet |
445
|
7.0
|
| 301 - 400 Feet |
196
|
3.1
|
| 401 - 500 Feet |
118
|
1.9
|
| 501 - 1000 Feet |
132
|
2.1
|
| 1001 - 2000 Feet |
71
|
1.1
|
| 2001 - 3000 Feet |
17
|
0.3
|
| Greater than 3000 Feet |
4
|
0.1
|
| TOTAL |
6,315
|
100.0
|
AGE OF BRIDGES
| STATE
SYSTEM HIGHWAY BRIDGES |
| YEAR |
NUMBER OF
BRIDGES
|
PERCENT OF
TOTAL
|
| Pre 1900 |
75
|
1.2
|
| 1900 - 1919 |
436
|
6.9
|
| 1920 - 1939 |
1,103
|
17.5
|
| 1940 - 1959 |
954
|
15.1
|
| 1960 - 1979 |
1,796
|
28.4
|
| 1980 or Later |
1,951
|
30.9
|
| TOTAL |
6,315
|
100.0
|
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