County profile · official public datasets

Pacific County, WA

120 public highway bridges tracked in the FHWA National Bridge Inventory: 56.7% rated Good, 37.5% Fair, 5.8% Poor.

120
Public bridges: 56.7%
Good condition: 5.8%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Pacific County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.

21st
of 39 on Poor share: 5.8%
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.

Pacific County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Pacific County ranks #21 of 39 Washington counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.8%). Pacific County, Washington contains 120 public highway bridges. Roughly 56.7% are rated “Good,” 37.5% “Fair,” and 5.8% “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.

Total bridges

120

Public highway bridges in Pacific County

Good condition

56.7%

68 of 120 rated 7-9

Fair condition

37.5%

45 of 120 rated 5-6

Poor condition

5.8%

7 of 120 rated 4 or below

In-state Poor-share rank

#21 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

56.7% (68)

Fair

37.5% (45)

Poor

5.8% (7)

Pacific County's Poor-condition bridges carry 18,234 vehicle crossings a day

That is 8% of the county's reported daily bridge traffic on 5.8% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 2,605 crossings a day against 1,305 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.

43.3% of Pacific County's bridges have passed the 50-year mark

52 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 56.7% 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 57.4% of the county's Poor-condition bridge traffic

US 101 over S FK WILLAPA RIVER, built 1966, carries 10,471 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 7-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 18,234 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1910s

7
1920s

5
1930s

4
1940s

2
1950s

14
1960s

18
1970s

9
1980s

18
1990s

29
2000s

1
2010s

12
2020s

1

What this shows Construction peaked in the 1990s, when 29 of the county's bridges still in the inventory were built, which is 24.2% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1974) matches the Washington average (1975).

How Pacific County compares with Washington's closest counties by inventory size

The 5 Washington counties nearest Pacific County in number of bridges, with their condition splits. Its 5.8% Poor share is the 5th-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.

Bridge inventory size and condition shares for Pacific County and the 5 Washington counties closest to it in inventory size
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
Skamania County	120	45.8%	45%	9.2%	1974
Pacific County (this page)	120	56.7%	37.5%	5.8%	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 Pacific 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 Pacific 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 120 Good 68 Fair 45 Poor 7

Good-condition bridges (68)

Sort:

Pacific County Bridge Snapshot

Condition distribution

Pacific County's Poor-condition bridges carry 18,234 vehicle crossings a day

43.3% of Pacific County's bridges have passed the 50-year mark

One structure carries 57.4% of the county's Poor-condition bridge traffic

How Pacific County compares with Washington's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

Good-condition bridges (68)

US 101

SR 401

Greenhead Slough R

ELK PRAIRIE ROAD

MENLO-SO.FORK ROAD

ELK PRAIRIE ROAD

OXBOW ROAD

PARPALA ROAD

LARKIN ROAD

MILL CREEK ROAD

SOUTH VALLEY ROAD

MILL CREEK ROAD

US 101

SR 6

US 101

PARPALA ROAD

MONOHON LANDING RD

SR 401

SR 6

CAMP ONE ROAD

HANEN ROAD

SR 6

OAKVILLE ROAD

US 101

MILL CREEK ROAD

MILL CREEK ROAD

MILL CREEK ROAD

WESLEY KING RD

RUE CREEK ROAD

NORTH NEMAH ROAD

NYBERG ROAD

US 101

SR 105

SR 6

DOYLE ROAD

SR 4

CLARK ROAD

WILSON CREEK ROAD

FOWLER ROAD

SR 105

ALANEN ROAD

BROOKLYN ROAD

MONOHAN LANDING RD

SR 6

JACOBSON ROAD

Hyland Stringer Rd

US 101

US 101

US 101

SR 4

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