Total bridges
120
Public highway bridges in Skamania County
County profile · official public datasets
Skamania County, WA
120 public highway bridges tracked in the FHWA National Bridge Inventory: 45.8% rated Good, 45% Fair, 9.2% Poor.
- 120
- Public bridges
- 45.8%
- Good condition
- 9.2%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Skamania County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 31st
- of 39 on Poor share
- 9.2%
- Poor-condition share
- 120
- public highway bridges
- 1974
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Skamania County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Skamania County ranks #31 of 39 Washington counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 9.2%). Skamania County, Washington contains 120 public highway bridges. Roughly 45.8% are rated “Good,” 45% “Fair,” and 9.2% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
45.8%
55 of 120 rated 7-9
Fair condition
45%
54 of 120 rated 5-6
Poor condition
9.2%
11 of 120 rated 4 or below
In-state Poor-share rank
#31 of 39
Among Washington counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 120 NBI-tracked bridges by lowest applicable component rating.
Good 45.8% (55)
Fair 45% (54)
Poor 9.2% (11)
Skamania County's Poor-condition bridges carry 10,539 vehicle crossings a day
That is 13.3% of the county's reported daily bridge traffic on 9.2% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 958 crossings a day against 434 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 120 of 120 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
50.8% of Skamania County's bridges have passed the 50-year mark
61 of the 120 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 45.8% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 45.9% of the county's Poor-condition bridge traffic
SR 14 over HALF BRIDGE, built 1930, carries 4,835 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 11-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 10,539 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Skamania County's bridges were built
120 bridges with a recorded construction year, grouped by decade
- 1920s 5
1920–1929
5 bridges
- 1930s 6
1930–1939
6 bridges
- 1940s 1
1940–1949
1 bridges
- 1950s
1950–1959
20 bridges
- 1960s
1960–1969
21 bridges
- 1970s
1970–1979
18 bridges
- 1980s
1980–1989
21 bridges
- 1990s
1990–1999
9 bridges
- 2000s
2000–2009
12 bridges
- 2010s 7
2010–2019
7 bridges
What this shows Construction peaked in the 1960s, when 21 of the county's bridges still in the inventory were built, which is 17.5% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1974) matches the Washington average (1975).
How Skamania County compares with Washington's closest counties by inventory size
The 5 Washington counties nearest Skamania County in number of bridges, with their condition splits. Its 9.2% Poor share is the 6th-lowest of these 6. Its average build year of 1974 against a peer-group mean of 1978 is in line with the group.
Showing the 5 closest of 38 Washington counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Franklin County | 134 | 56% | 39.6% | 4.5% | 1970 |
| Mason County | 133 | 53.4% | 42.1% | 4.5% | 1975 |
| Pacific County | 120 | 56.7% | 37.5% | 5.8% | 1974 |
| Skamania County (this page) | 120 | 45.8% | 45% | 9.2% | 1974 |
| Kitsap County | 115 | 71.3% | 27.8% | 0.9% | 1989 |
| Jefferson County | 99 | 57.6% | 38.4% | 4% | 1982 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Skamania County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Skamania County, both outside Washington so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside WA (120 bridges here).
- Matanuska-Susitna County, AK · 120 bridges
- Indian River County, FL · 120 bridges
- Perry County, MO · 120 bridges
- Schuyler County, MO · 120 bridges
Similar average build year
Nearest mean year-built outside WA (1974 here).
- Knox County, TN · avg 1974 · 588 bridges
- Summit County, OH · avg 1974 · 563 bridges
- Onondaga County, NY · avg 1974 · 472 bridges
- Orange County, NY · avg 1974 · 472 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (120)
NO DATA ENTERED
FairOver: CLEAR CREEK
5.7 MILES NORTH OF MT. ST, Skamania, WA
Built 1989 Load: 55.4 t ADT: 50
NO DATA ENTERED
FairOver: MARBLE CREEK
8 MILES EAST OF CNTY LINE, Skamania, WA
Built 1998 Load: 55.4 t ADT: 650
NO DATA ENTERED
FairOver: QUARTZ CREEK 2
NO DATA ENTERED, Skamania, WA
Built 1998 Load: 55.7 t ADT: 2
NO DATA ENTERED
FairOver: LITTLE WHITE SALMON 2
NO DATA ENTERED, Skamania, WA
Built 1985 Load: 59.9 t ADT: 5
WASHOUGAL RIVER RD
GoodOver: W. FORK WASHOUGAL RIVER
MP 10.64 Washougal Rvr Rd, Skamania, WA
Built 1957 Load: 0.3 t ADT: 1,231
SKAMANIA MINES RD
GoodOver: WEST FORK WASHOUGAL RIVE
1.33 N JCT SKYE RD, Skamania, WA
Built 1977 Load: 7.8 t ADT: 111
OKLAHOMA ROAD
GoodOver: LITTLE WHITE SALMON RVR.
7.43 N WILLARD, Skamania, WA
Built 1973 Load: 8.1 t ADT: 33
HEMLOCK ROAD
GoodOver: WIND RIVER
MP 0.05 Hemlock Road, Skamania, WA
Built 1955 Load: 9.7 t ADT: 729
MINERAL SPRINGS RD
GoodOver: WIND RIVER
MP 0.18 Mineral Springs R, Skamania, WA
Built 1977 Load: 14.9 t ADT: 59
SR 14
GoodOver: SP S RY
40.0 E CLARK CO, Skamania, WA
Built 1934 Load: 15.2 t ADT: 3,750
WILLARD ROAD
GoodOver: LITTLE WHITE SALMON RIVE
1.54 N JCT 93041, Skamania, WA
Built 1968 Load: 15.2 t ADT: 156
OKLAHOMA ROAD
GoodOver: LITTLE WHITE SALMON RIVE
4.82 N WILLARD, Skamania, WA
Built 1969 Load: 15.2 t ADT: 46
TROUT CREEK RD
GoodOver: TROUT CREEK
MP 0.55 Trout Creek Road, Skamania, WA
Built 1972 Load: 16.5 t ADT: 205
WIND RIVER ROAD
GoodOver: PARADISE CREEK
20.41 NW JCT SR14, Skamania, WA
Built 1950 Load: 17.2 t ADT: 321
HEMLOCK ROAD
GoodOver: TROUT CREEK
1.32 SW JCT 92135, Skamania, WA
Built 1975 Load: 17.5 t ADT: 85
MOORAGE ROAD
GoodOver: WOODARD CREEK
BEACON ROCK STATE PARK, Skamania, WA
Built 1998 Load: 18.8 t ADT: 200
OKLAHOMA ROAD
GoodOver: LAVA CREEK
0.23 N JCT WILLARD, Skamania, WA
Built 1965 Load: 19.4 t ADT: 46
DUNCAN CREEK ROAD
GoodOver: DUNCAN CREEK
2.89 N JCT SR 14, Skamania, WA
Built 1979 Load: 20.4 t ADT: 37
CEDAR CREEK ROAD
GoodOver: PANTHER CREEK
0.15 NE JCT PANTHER CK RD, Skamania, WA
Built 1993 Load: 20.4 t ADT: 40
42 ROAD
GoodOver: PASS CREEK
N OF WIND RIVER WORK CENT, Skamania, WA
Built 2000 Load: 20.9 t ADT: 70
NO DATA ENTERED
GoodOver: SOREHEAD CREEK
3.1 MILES SOUTHEAST OF JC, Skamania, WA
Built 1963 Load: 20.9 t ADT: 207
SR 14
GoodOver: GULCH
37.4 E CLARK CO, Skamania, WA
Built 1937 Load: 21.8 t ADT: 3,587
RYAN ALLEN ROAD
GoodOver: ROCK CREEK
1.08 N JCT 2ND ST., Skamania, WA
Built 1972 Load: 22.0 t ADT: 373
OKLAHOMA ROAD
GoodOver: LITTLE WHITE SALMON RIVE
1.36 N WILLARD, Skamania, WA
Built 1962 Load: 22.4 t ADT: 129
BEAR CREEK ROAD
GoodOver: PANTHER CREEK
0.48 N JCT WIND RIVER RD, Skamania, WA
Built 1978 Load: 22.7 t ADT: 154
CASCADE AVE
GoodOver: HAMILTON CREEK
0.3 M S SR 14, Skamania, WA
Built 1980 Load: 23.0 t ADT: 402
FISH HATCHERY ROAD
GoodOver: LITTLE WHITE SALMON RVR
FISH HATCHERY ROAD, Skamania, WA
Built 1991 Load: 26.3 t ADT: 35
WIND RIVER ROAD
GoodOver: RUSH CREEK
29.43 NW JCT SR14, Skamania, WA
Built 1955 Load: 27.2 t ADT: 60
SR 14
GoodOver: WIND RIVER
27.6 E CLARK CO, Skamania, WA
Built 1985 Load: 30.8 t ADT: 3,917
WIND RIVER ROAD
GoodOver: WIND RIVER
15.23 NW JCT SR 14, Skamania, WA
Built 1950 Load: 31.1 t ADT: 198
NO DATA ENTERED
GoodOver: ADAMS CREEK
2329 IS N OF 90/23 JCT, Skamania, WA
Built 2000 Load: 32.7 t ADT: 30
NO DATA ENTERED
GoodOver: ALEC CREEK
16.3 MILES NE OF JCT. FS, Skamania, WA
Built 1969 Load: 33.6 t ADT: 99
NO DATA ENTERED
GoodOver: EAST CANYON CREEK
21.2 MILES SOUTH-EAST OF, Skamania, WA
Built 2010 Load: 33.7 t ADT: 5
NO DATA ENTERED
GoodOver: YELLOWJACKET CREEK
NO DATA ENTERED, Skamania, WA
Built 2010 Load: 35.0 t ADT: 15
NO DATA ENTERED
GoodOver: TRIB TO GREEN FORK
NO DATA ENTERED, Skamania, WA
Built 2010 Load: 35.4 t ADT: 80
SR 14
GoodOver: LITTLE WHITE SALMON R
35.4 E CLARK CO, Skamania, WA
Built 1994 Load: 36.3 t ADT: 3,587
NO DATA ENTERED
GoodOver: UPPER MUDDY RIVER
15.1 MILES FROM THE JUNCT, Skamania, WA
Built 1989 Load: 38.1 t ADT: 282
FSDR 43
GoodOver: LAYOUT CREEK
20 MINUTES WEST OF WIND R, Skamania, WA
Built 2014 Load: 38.6 t ADT: 30
NO DATA ENTERED
GoodOver: EAST CANYON CREEK
25 MILES SOUTHEAST OF JCT, Skamania, WA
Built 2010 Load: 38.9 t ADT: 5
NO DATA ENTERED
GoodOver: CRATER CREEK
8.6 MILES NW FO HWY 14 MP, Skamania, WA
Built 2010 Load: 40.2 t ADT: 70
NO DATA ENTERED
GoodOver: PUNY CREEK
2 MILES SE OF FS BOUNDARY, Skamania, WA
Built 2000 Load: 40.9 t ADT: 207
NO DATA ENTERED
GoodOver: MUDDY RIVER
4.6 MILES NORTH OF FS RD, Skamania, WA
Built 1988 Load: 41.8 t ADT: 400
NO DATA ENTERED
GoodOver: PIN CREEK
23 1/2 MILES EAST OF JCT., Skamania, WA
Built 1973 Load: 42.7 t ADT: 99
DOETSCH RANCH ROAD
GoodOver: BURLINGTON NORTHERN RR
BEACON ROCK STATE PARK, Skamania, WA
Built 2006 Load: 48.6 t ADT: 200
CASCADE DRIVE
GoodOver: GREENLEAF CREEK
00.1 N BPA LINES, Skamania, WA
Built 2004 Load: 48.6 t ADT: 100
NO DATA ENTERED
GoodOver: PINE CREEK
0.8 MI FROM JCT. FS RD 90, Skamania, WA
Built 1986 Load: 49.0 t ADT: 400
NO DATA ENTERED
GoodOver: NO DATA ENTERED
NO DATA ENTERED, Skamania, WA
Built 2005 Load: 49.0 t ADT: 30
NO DATA ENTERED
GoodOver: TROUT CREEK
NO DATA ENTERED, Skamania, WA
Built 2004 Load: 49.9 t ADT: 70
NO DATA ENTERED
GoodOver: PELVY CREEK
FROM CHELATCHIE PRAIRIE T, Skamania, WA
Built 1982 Load: 50.8 t ADT: 10
NO DATA ENTERED
GoodOver: PANTHER CREEK
5.8 MILES N OF HWY 14 (MP, Skamania, WA
Built 1988 Load: 51.8 t ADT: 10
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.