US Bridges

Ketchikan Gateway Borough, Alaska bridges

Ketchikan Gateway Borough has 107 bridges and culverts in the National Bridge Inventory, the oldest built in 1938. 12 (11%) are rated poor. The most common type is stringer/multi-beam or girder (46%).

Bridges
107
Good
47%
Fair
42%
Poor
11%
12 bridges
Average age
30 yrs
Posted or closed
12

Map of bridges in Ketchikan Gateway Borough

Green good, amber fair, red poor. Click a marker for details.

Search bridges in Ketchikan Gateway Borough

Type at least two characters, or pick a condition or type, to search every bridge in the county.

Condition

11%poor
Good47%(50)
Fair42%(45)
Poor11%(12)

When they were built

<1900: 0 bridges<19001900s: 0 bridges19001910s: 0 bridges19101920s: 0 bridges19201930s: 1 bridges119301940s: 1 bridges119401950s: 6 bridges619501960s: 10 bridges1019601970s: 7 bridges719701980s: 15 bridges1519801990s: 15 bridges1519902000s: 16 bridges1620002010s: 28 bridges2820102020s: 8 bridges82020
Bridges built per decade. Year built as recorded in the inventory; reconstruction years are not included.

Busiest

  1. South Tongass HWY over Tongass Avenue Viaduct
    14,564 vehicles/day
    Fair
  2. South Tongass HWY over Water ST Viaduct
    14,046 vehicles/day
    Poor
  3. South Tongass HWY over Hoadley Creek
    11,900 vehicles/day
    Poor
  4. North Tongass HWY over Carlanna Creek
    9,210 vehicles/day
    Fair
  5. South Tongass HWY over Front Street Viaduct
    8,330 vehicles/day
    Fair

Longest

  1. South Tongass HWY over Tongass Avenue Viaduct
    1,727 ft
    Fair
  2. South Tongass HWY over Water ST Viaduct
    1,624 ft
    Poor
  3. Water Street over Water ST No 2
    700 ft
    Good
  4. Hopkins Alley over Bauer-Hopkins Trestle
    697 ft
    Fair
  5. Young St/Sayles ST over Dunton ST Viaduct
    540 ft
    Fair

Oldest

  1. South Tongass HWY over Forks Creek
    Built 1938
    Fair
  2. South Tongass HWY over Ketchikan Creek
    Built 1944
    Fair
  3. Hopkins Alley over Bauer-Hopkins Trestle
    Built 1950
    Fair
  4. South Tongass HWY over Water ST Viaduct
    Built 1955
    Poor
  5. Peterson Street over Peterson Street
    Built 1955
    Poor

All bridges in Ketchikan Gateway Borough

Busiest first · showing 1–107 of 107
Bridges in Ketchikan Gateway Borough
BridgeLocationBuiltTypeLengthDaily trafficCondition
South Tongass HWY over Tongass Avenue Viaduct
No. 0997
Mile Point 1.31956Tee Beam1,727 ft14,564Fair
South Tongass HWY over Water ST Viaduct
No. 0797
Mile Point 1.71955Tee Beam1,624 ft14,046Poor
South Tongass HWY over Hoadley Creek
No. 0725
Mile Point 0.21957Stringer/Multi-beam or Girder45 ft11,900Poor
North Tongass HWY over Carlanna Creek
No. 0749
Mile Point 0.31973Tee Beam87 ft9,210Fair
South Tongass HWY over Front Street Viaduct
No. 1080
Mile Point 2.01969Tee Beam247 ft8,330Fair
South Tongass HWY over Ketchikan Creek
No. 0724
Mile Point 2.41944Truss - Thru124 ft6,850Fair
South Tongass HWY over Front and Mill ST Viad
No. 1081
Mile Point 2.11973Tee Beam357 ft6,830Good
North Tongass HWY over Cannery Creek
No. 0746
Mile Point 3.61989Tee Beam81 ft5,280Fair
North Tongass HWY over Ward Creek
No. 0747
Mile Point 4.61975Tee Beam195 ft5,250Poor
North Tongass HWY over Whipple Creek
No. 1153
Mile Point 9.41968Stringer/Multi-beam or Girder154 ft3,440Fair
Park Street over Ketchikan CR Park-Lower
No. 1133
Mile Point 0.11967Tee Beam65 ft2,893Fair
Park/Harris ST over Ketchikan Creek
No. 0726
Mile Point 0.11957Truss - Thru67 ft2,512Poor
Fair Street over Ketchikan Creek Fair ST
No. 1131
Mile Point 0.51967Tee Beam92 ft2,480Fair
Park Street over Ketchikan CR Park-Upper
No. 1132
Mile Point 0.31967Tee Beam91 ft2,298Fair
Franklin Road over Forks Creek No. 2
No. 4109
Mile Point 0.11983Culvert22 ft1,080Good
Ferry Shuttle RTE over Revilla Airport F.T. II
No. 0195
Ketchikan2024Stringer/Multi-beam or Girder292 ft1,023Good
Ferry Shuttle RTE over Revilla Airport F.T. I
No. 1819
Ketchikan1988Orthotropic168 ft1,023Fair
Grant Street over Grant Street Viaduct
No. 0384
Mile Point 0.11970Stringer/Multi-beam or Girder213 ft1,016Fair
South Tongass HWY over Herring Cove
No. 0253
Mile Point 10.72022Tee Beam131 ft820Good
South Tongass HWY over Forks Creek
No. 4031
Mile Point 8.81938Slab28 ft820Fair
Spruce Mill Way over Front St/Spruce Mill Way
No. 1901
Ketchikan1969Slab530 ft735Good
Water Street over Water ST No 2
No. 0446
Mile Point 0.22018Slab700 ft650Good
Water Street over Water ST No 3
No. 2313
Mile Point 0.12017Tee Beam75 ft650Good
Young St/Sayles ST over Dunton ST Viaduct
No. 0453
Mile Point 0.11979Slab540 ft565Fair
Knudson Cove Road over Trollers Creek
No. 0864
Mile Point 0.52017Tee Beam124 ft550Good
Hopkins Alley over Bauer-Hopkins Trestle
No. 1472
Mile Point 0.11950Stringer/Multi-beam or Girder697 ft400Fair
Thomas Street over Thomas Trestle
No. 1473
Mile Point 0.11960Stringer/Multi-beam or Girder384 ft400Fair
Ferry Shuttle RTE over Gravina Airport F.T. I
No. 0176
Ketchikan Airport1998Orthotropic162 ft348Fair
Ferry Shuttle RTE over Gravina Airport F.T. II
No. 0196
Ketchikan Airport2024Stringer/Multi-beam or Girder281 ft348Good
North Tongass HWY over First Waterfall Creek
No. 0414
Mile Point 13.92019Tee Beam145 ft330Good
North Tongass HWY over Second Waterfall Creek
No. 0415
Mile Point 14.52019Tee Beam145 ft330Good
South Tongass HWY over Whitman Creek
No. 1078
Mile Point 11.21962Stringer/Multi-beam or Girder147 ft270Fair
Marine HWY Route over Ketchikan Berth II
No. 1823
Ketchikan1986Box Beam or Girders - Multiple168 ft250Fair
Millar Street over Millar ST Viaduct
No. 1781
Mile Point 0.12011Slab75 ft200Good
Marine HWY Route over Ketchikan Berth I
No. 0800
Mile Point 0.21988Box Beam or Girders - Multiple168 ft164Fair
Shelter Cove Road over Harriet Hunt Creek
No. 2264
Mile Point 2.71981Stringer/Multi-beam or Girder53 ft125Poor
8000000 over Perm
No. 100552000003021
Ward Lake1978Stringer/Multi-beam or Girder128 ft100Fair
Warren Street over Warren ST Viaduct
No. 1780
Mile Point 0.12011Stringer/Multi-beam or Girder71 ft100Good
Valley Forge DR over West Fk Ketchikan CR
No. 1840
Mile Point 0.11970Stringer/Multi-beam or Girder51 ft100Fair
Gravina Island HWY over Airport Creek
No. 2198
Mile Point 4.62019Tee Beam100 ft60Good
Seley Road over East Fork Lewis Reef CR
No. 4118
Mile Point 1.22016Culvert29 ft60Good
Seley Road over West Fork Lewis Reef CR
No. 4119
Mile Point 1.52016Culvert26 ft60Good
Inter Island RTE over Ketchikan Berth III
No. 0190
Ketchikan2003Box Beam or Girders - Multiple143 ft50Fair
8000030 over Perm
No. 100520000001124
Ward Lake1991Slab37 ft50Good
Sayles/Gorge ST over Sayles/Gorge Viaduct
No. 1841
Mile Point 0.11960Stringer/Multi-beam or Girder127 ft40Poor
Gravina Island HWY over Government Creek
No. 2159
Mile Point 3.12008Tee Beam143 ft30Good
Gravina Island HWY over Gravina Creek
No. 2222
Mile Point 2.12008Tee Beam63 ft30Good
Harding Street over Harding Street
No. 2262
Mile Point 0.11968Stringer/Multi-beam or Girder33 ft30Poor
Peterson Street over Peterson Street
No. 2263
Mile Point 0.11955Stringer/Multi-beam or Girder41 ft30Poor
Bayview Street over Bayview Street Viaduct
No. 1181
Ketchikan2011Stringer/Multi-beam or Girder142 ft20Good
No Data Entered over Mod
No. 100510000001060
Gravina1990Stringer/Multi-beam or Girder40 ft10Fair
Gravina Island over Gravina Ferry Layup Fac
No. 1704
Ketchikan Airport2023Stringer/Multi-beam or Girder140 ft10Good
Shelter Cove Road over Castle Creek
No. 2265
Mile Point 6.12024Stringer/Multi-beam or Girder91 ft10Good
Shelter Cove Road over Leask Creek
No. 2266
Mile Point 7.82024Stringer/Multi-beam or Girder91 ft10Good
Shelter Cove Road over Wolf Run Creek
No. 2269
Mile Point 8.22024Stringer/Multi-beam or Girder61 ft10Good
Shelter Cove Road over Upper Salt Creek
No. 2338
Mile Point 13.62024Stringer/Multi-beam or Girder91 ft10Good
Bostwick Lake Road over Bostwick No. 1
No. 2346
Mile Point 1.22006Stringer/Multi-beam or Girder40 ft10Fair
Bostwick Lake Road over Bostwick No. 2
No. 2347
Mile Point 1.32006Stringer/Multi-beam or Girder21 ft10Fair
Bostwick Lake Road over Bostwick No. 3
No. 2348
Mile Point 1.52006Stringer/Multi-beam or Girder26 ft10Fair
Bostwick Lake Road over Bostwick No. 4
No. 2349
Mile Point 2.72006Stringer/Multi-beam or Girder31 ft10Fair
Bostwick Lake Road over Bostwick No. 5
No. 2350
Mile Point 2.92006Stringer/Multi-beam or Girder43 ft10Fair
Bostwick Lake Road over Bostwick No. 6
No. 2351
Mile Point 3.52006Stringer/Multi-beam or Girder38 ft10Fair
Vallenar Bay Road over High Mountain Creek
No. 2356
Mile Point 2.02018Girder and Floorbeam System40 ft10Good
Vallenar Bay Road over California Creek
No. 2357
Mile Point 2.32018Girder and Floorbeam System40 ft10Good
Vallenar Bay Road over Rosa Reef Creek
No. 2358
Mile Point 3.22018Girder and Floorbeam System50 ft10Good
Vallenar Bay 3000 over Micro Creek
No. 2359
Mile Point 0.82018Girder and Floorbeam System40 ft10Good
Vallenar Bay 3000 over Little Creek
No. 2360
Mile Point 0.92018Girder and Floorbeam System40 ft10Good
Vallenar Bay 3000 over Vallenar Creek
No. 2361
Mile Point 1.32018Girder and Floorbeam System80 ft10Good
8400000 over Perm
No. 100520000001134
Shoal Cove1985Stringer/Multi-beam or Girder61 ft5Good
8400000 over Perm
No. 100520000001135
Shoal Cove1985Stringer/Multi-beam or Girder71 ft5Good
8400000 over Perm
No. 100520000001136
Shoal Cove1987Stringer/Multi-beam or Girder93 ft5Good
8430000 over Perm
No. 100520000001145
Shoal Cove1982Stringer/Multi-beam or Girder71 ft5Fair
8440000 over Perm
No. 100520000001146
Shoal Cove1987Stringer/Multi-beam or Girder82 ft5Good
8400000 over Trail # 828400SHOAL
No. 100520000032846
Shoal Cove1992Box Beam or Girders - Multiple60 ft5Poor
No Data Entered over Perm
No. 100552000003109
Shoal Cove2003Stringer/Multi-beam or Girder121 ft5Good
No Data Entered over Licking Creek
No. 100552000013518
Shoal Cove2011Slab40 ft5Good
8400000 over No Data Entered
No. 100552000014255
Shoal Cove2010Slab40 ft5Good
840000 over No Data Entered
No. 100552000014261
Shoal Cove2010Slab40 ft5Good
8430000 over Elderberry Creek
No. 100552000014263
Shoal Cove2011Slab40 ft5Good
8430000 over Monty Python Creek
No. 100552000014264
Shoal Cove2011Slab40 ft5Good
8440000 over Red Bull Slough
No. 100552000014266
Shoal Cove2011Slab40 ft5Good
No Data Entered over Mod
No. 100552000015626
Shelter2015Stringer/Multi-beam or Girder60 ft5Good
No Data Entered over No Data Entered
No. 100552000015715
Shelter2015Stringer/Multi-beam or Girder60 ft5Good
No Data Entered over End of the Line Creek
No. 100552000013517
Shoal Cove2011Slab40 ft3Good
No Data Entered over Perm
No. 100520000001137
Upper Carroll1997Stringer/Multi-beam or Girder90 ft2Poor
8400000 over Perm
No. 100520000001138
Upper Carroll1997Stringer/Multi-beam or Girder90 ft2Fair
8400000 over Perm
No. 100520000001608
Upper Carroll1997Stringer/Multi-beam or Girder70 ft2Fair
No Data Entered over Perm
No. 100552000003097
Upper Carroll2002Stringer/Multi-beam or Girder121 ft2Fair
No Data Entered over Perm
No. 100552000003098
Upper Carroll2002Stringer/Multi-beam or Girder60 ft2Fair
No Data Entered over Perm
No. 100552000003101
Upper Carroll2002Stringer/Multi-beam or Girder60 ft2Good
8400600-0.59 over Mod
No. 100552000010645
Upper Carroll2007Stringer/Multi-beam or Girder40 ft2Fair
8400600-0.70 over Mod
No. 100552000010646
Upper Carroll2007Stringer/Multi-beam or Girder50 ft2Fair
8060210-0.238 over No Data Entered
No. 100310000001450
Fire Cove1995Stringer/Multi-beam or Girder40 ft—Good
No Data Entered over No Data Entered
No. 100320000001379
Shelter1980Stringer/Multi-beam or Girder40 ft—Fair
8000000-21.711 over Mod
No. 100520000001121
Margaret1992Box Beam or Girders - Multiple80 ft—Fair
8040000 over Mod
No. 100520000001127
Margaret1989Box Beam or Girders - Multiple80 ft—Fair
8040000 over Mod
No. 100520000001128
Margaret1989Box Beam or Girders - Multiple60 ft—Fair
No Data Entered over Mod
No. 100520000001129
Margaret1989Box Beam or Girders - Multiple70 ft—Poor
8340000 over Mod
No. 100520000001147
Shelter1990Box Beam or Girders - Multiple70 ft—Fair
8050000-1.808 over Perm
No. 100520000001222
Fire Cove1995Stringer/Multi-beam or Girder80 ft—Good
8340000 over Mod
No. 100520000001236
Shelter1993Box Beam or Girders - Multiple60 ft—Fair
No Data Entered over No Data Entered
No. 100522000003472
Fire Cove1992Stringer/Multi-beam or Girder60 ft—Fair
No Data Entered over No Data Entered
No. 100532000010708
Shelter1995Stringer/Multi-beam or Girder50 ft—Fair
8330000 over Mod
No. 100540000001120
Shelter1992Box Beam or Girders - Multiple70 ft—Poor
8060000-3.286 over No Data Entered
No. 100552000003413
Fire Cove2005Slab40 ft—Good
Margaret over No Data Entered
No. 100552000013475
Margaret2010Slab40 ft—Fair
Margaret over No Data Entered
No. 100552000014651
Margaret2010Slab40 ft—Good

Structure types in Ketchikan Gateway Borough

Stringer/Multi-beam or Girder4945.8%
Tee Beam1816.8%
Slab1615.0%
Box Beam or Girders - Multiple1110.3%
Girder and Floorbeam System65.6%
Culvert32.8%
Truss - Thru21.9%
Orthotropic21.9%

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