County profile · official public datasets

Stevens County, WA

75 public highway bridges tracked in the FHWA National Bridge Inventory: 40% rated Good, 48% Fair, 12% Poor.

75
Public bridges
40%
Good condition
12%
Poor condition

The verdict

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

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

37th
of 39 on Poor share
12%
Poor-condition share
75
public highway bridges
1973
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.

Stevens County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Stevens County ranks #37 of 39 Washington counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 12%). Stevens County, Washington contains 75 public highway bridges. Roughly 40% are rated “Good,” 48% “Fair,” and 12% “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

75

Public highway bridges in Stevens County

Good condition

40%

30 of 75 rated 7-9

Fair condition

48%

36 of 75 rated 5-6

Poor condition

12%

9 of 75 rated 4 or below

In-state Poor-share rank

#37 of 39

Among Washington counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 75 NBI-tracked bridges by lowest applicable component rating.

Good
40% (30)
Fair
48% (36)
Poor
12% (9)

Stevens County's Poor-condition bridges carry 3,392 vehicle crossings a day

That is 5.1% of the county's reported daily bridge traffic on 12% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 377 crossings a day against 812 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 75 of 75 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

64% of Stevens County's bridges have passed the 50-year mark

48 of the 75 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 40% 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 30.8% of the county's Poor-condition bridge traffic

Orin - Rice Road over COLVILLE RIVER, built 1959, carries 1,045 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 9-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 3,392 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Stevens County's bridges were built

75 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1960s, when 17 of the county's bridges still in the inventory were built, which is 22.7% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1973) matches the Washington average (1975).

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

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

The 5 Washington counties nearest Stevens County in number of bridges, with their condition splits. Its 12% Poor share is the 5th-lowest of these 6. Its average build year of 1973 against a peer-group mean of 1975 is in line with the group.

Showing the 5 closest of 38 Washington counties eligible for comparison.

Bridge inventory size and condition shares for Stevens County and the 5 Washington counties closest to it in inventory size
County Bridges Poor
Klickitat County 90 7.8%
Columbia County 86 10.5%
Stevens County (this page) 75 12%
Pend Oreille County 71 12.7%
Garfield County 54 7.4%
Ferry County 53 9.4%

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 Stevens 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 Stevens County, both outside Washington so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside WA (75 bridges here).

Similar average build year

Nearest mean year-built outside WA (1973 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 75 Good 30 Fair 36 Poor 9

Good-condition bridges (30)

NO DATA ENTERED

Good

Over: SOUTH FORK MILL CREEK

NO DATA ENTERED, Stevens, WA

Built 2021 ADT: 20

SR 25

Good

Over: COLVILLE RIVER

54.9 N LINCOLN CO, Stevens, WA

Built 1939 Load: 14.6 t ADT: 1,146

BETTERIDGE ROAD

Good

Over: COLVILLE RIVER

00.46 W JCT SR 231, Stevens, WA

Built 1974 Load: 16.8 t ADT: 25

COLE

Good

Over: MILL CREEK

.07 E OF ALADDIN RD., Stevens, WA

Built 1974 Load: 16.8 t ADT: 45

NEWTON ROAD

Good

Over: COLVILLE RIVER

01.04 W JCT SR 231, Stevens, WA

Built 1974 Load: 17.8 t ADT: 50

New House Lane

Good

Over: CHAMOKANE CREEK

01.14 W JCT SR 231, Stevens, WA

Built 1975 Load: 18.5 t ADT: 60

Napoleon Bridge Rd

Good

Over: KETTLE RIVER

.65 W SR395, Stevens, WA

Built 1998 Load: 20.1 t ADT: 63

WILLIAMS LAKE ROAD

Good

Over: MILL CREEK

2.3 N JCT US 395, Stevens, WA

Built 1996 Load: 22.7 t ADT: 1,750

IRR BIA RTE 16

Good

Over: CHAMOKANE CREEK

11.2 KM SE OF AGENCY, Stevens, WA

Built 1980 Load: 24.5 t ADT: 50

Cemetery Road

Good

Over: CHAMOKANE CREEK

03.66 SW JCT SR 231, Stevens, WA

Built 1974 Load: 24.6 t ADT: 100

HENRY ROAD

Good

Over: MILL CREEK

.09 E JCT ALADDIN RD., Stevens, WA

Built 1974 Load: 25.9 t ADT: 35

US 395

Good

Over: MILL CREEK

2.7 N JCT SR 20, Stevens, WA

Built 1983 Load: 26.2 t ADT: 9,110

ROCKY CREEK ROAD

Good

Over: ROCKY CREEK

.93 SE JCT ALADDIN RD., Stevens, WA

Built 2007 Load: 26.2 t ADT: 25

NO DATA ENTERED

Good

Over: LOST CREEK

NO DATA ENTERED, Stevens, WA

Built 2018 Load: 28.2 t ADT: 50

MID. FORK MILL CR.

Good

Over: MIDDLE FORK MILL CREEK

.58 NE SOUTH FORK MILL CR, Stevens, WA

Built 2022 Load: 30.8 t ADT: 9

NO DATA ENTERED

Good

Over: HUNTER CREEK

NO DATA ENTERED, Stevens, WA

Built 2016 Load: 32.4 t ADT: 50

SR 20

Good

Over: LITTLE PEND OREILLE R

16.2 E JCT US 395, Stevens, WA

Built 1965 Load: 32.7 t ADT: 759

OAKSHOTT ROAD

Good

Over: COLVILLE RIVER

.44 E JCT VALLEY-WESTSIDE, Stevens, WA

Built 1996 Load: 32.7 t ADT: 1,350

Barstow Bridge Roa

Good

Over: Kettle River

00.02 W JCT PierreLk rd, Stevens, WA

Built 2011 Load: 33.7 t ADT: 708

Ford - Welpinit Rd

Good

Over: Chamokane Creek

00.07 W jct SR 231, Stevens, WA

Built 2001 Load: 36.6 t ADT: 653

Laurier Road

Good

Over: KETTLE RIVER

2.11 MILES NE SR395, Stevens, WA

Built 1996 Load: 37.9 t ADT: 50

Greenwood Loop

Good

Over: COLVILLE RIVER

1.0 S JCT SR 395, Stevens, WA

Built 1963 Load: 38.2 t ADT: 527

MID. FORK MILL CR.

Good

Over: MIDDLE FORK MILL CREEK

2.8 NE SOUTH FORK MILL CR, Stevens, WA

Built 2022 Load: 38.9 t ADT: 8

BLACKTAIL MTN ROAD

Good

Over: LITTLE PEND OREILLE RVR

SEC 32 T35N R41E, Stevens, WA

Built 2004 Load: 39.0 t ADT: 25

US 395

Good

Over: LITTLE PEND OREILLE R

20.9 N JCT SR 231, Stevens, WA

Built 1980 Load: 39.0 t ADT: 6,684

BIA IRR RTE 3

Good

Over: LAKE ROOSEVELT

2.2 MI S OF GIFFORD WA, Stevens, WA

Built 2011 Load: 40.8 t ADT: 300

Old Highway-Arden

Good

Over: Little Pend Oreille Riv

00.05 N. Jct 3618 Hall Rd, Stevens, WA

Built 2013 Load: 47.0 t ADT: 401

SOUTH FORK MILL CR

Good

Over: SOUTH FORK MILL CREEK

2.31 E JCT ALADDIN RD., Stevens, WA

Built 2020 Load: 51.2 t ADT: 64

COURT STREET

Good

Over: CHEWELAH CREEK

0.08 W 2ND AVE, Stevens, WA

Built 2010 Load: 59.0 t ADT: 50

NORTHPORT-FLAT CRK

Good

Over: KETTLE RIVER

00.05 W JCT SR395, Stevens, WA

Built 2008 Load: 62.2 t ADT: 200

Read our methodology - how this data is sourced, computed, and verified.

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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.