Total bridges
188
Public highway bridges in Baker County
County profile · official public datasets
Baker County, OR
188 public highway bridges tracked in the FHWA National Bridge Inventory: 27.7% rated Good, 65.4% Fair, 6.9% Poor.
- 188
- Public bridges
- 27.7%
- Good condition
- 6.9%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Baker County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 29th
- of 36 on Poor share
- 6.9%
- Poor-condition share
- 188
- public highway bridges
- 1972
- 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.
Baker County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Baker County ranks #29 of 36 Oregon counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.9%). Baker County, Oregon contains 188 public highway bridges. Roughly 27.7% are rated “Good,” 65.4% “Fair,” and 6.9% “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
27.7%
52 of 188 rated 7-9
Fair condition
65.4%
123 of 188 rated 5-6
Poor condition
6.9%
13 of 188 rated 4 or below
In-state Poor-share rank
#29 of 36
Among Oregon counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 188 NBI-tracked bridges by lowest applicable component rating.
Good 27.7% (52)
Fair 65.4% (123)
Poor 6.9% (13)
Baker County's Poor-condition bridges carry 1,052 vehicle crossings a day
That is 0.3% of the county's reported daily bridge traffic on 6.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 81 crossings a day against 1,980 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 188 of 188 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
67.6% of Baker County's bridges have passed the 50-year mark
127 of the 188 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 27.7% 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 18.3% of the county's Poor-condition bridge traffic
C-584 NON-FA over S FK BURNT R (ROUSE RD), built 1979, carries 193 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 13-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 1,052 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Baker County's bridges were built
188 bridges with a recorded construction year, grouped by decade
- 1920s 7
1920–1929
7 bridges
- 1930s 3
1930–1939
3 bridges
- 1940s 2
1940–1949
2 bridges
- 1950s 19
1950–1959
19 bridges
- 1960s
1960–1969
56 bridges
- 1970s
1970–1979
54 bridges
- 1980s 20
1980–1989
20 bridges
- 1990s 10
1990–1999
10 bridges
- 2000s 12
2000–2009
12 bridges
- 2010s 4
2010–2019
4 bridges
- 2020s 1
2020–2029
1 bridges
What this shows Construction peaked in the 1960s, when 56 of the county's bridges still in the inventory were built, which is 29.8% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1972) matches the Oregon average (1975).
How Baker County compares with Oregon's closest counties by inventory size
The 5 Oregon counties nearest Baker County in number of bridges, with their condition splits. Its 6.9% Poor share is the 4th-lowest of these 6. Its average build year of 1972 against a peer-group mean of 1976 is in line with the group.
Showing the 5 closest of 35 Oregon counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Benton County | 190 | 32.6% | 60% | 7.4% | 1974 |
| Lincoln County | 190 | 41.6% | 51.1% | 7.4% | 1974 |
| Baker County (this page) | 188 | 27.7% | 65.4% | 6.9% | 1972 |
| Malheur County | 181 | 31.5% | 65.7% | 2.8% | 1976 |
| Union County | 166 | 42.2% | 54.2% | 3.6% | 1980 |
| Polk County | 161 | 29.2% | 64% | 6.8% | 1976 |
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 Baker 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 Baker County, both outside Oregon so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside OR (188 bridges here).
- Pope County, AR · 188 bridges
- Kennebec County, ME · 188 bridges
- Coos County, NH · 188 bridges
- Socorro County, NM · 188 bridges
Similar average build year
Nearest mean year-built outside OR (1972 here).
- Santa Clara County, CA · avg 1972 · 964 bridges
- Madison County, AL · avg 1972 · 710 bridges
- Kern County, CA · avg 1972 · 668 bridges
- York County, PA · avg 1972 · 569 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (13)
LARCH CREEK RD.
PoorOver: DEER CREEK
0.9 MI N JCT ORE 220, Baker, OR
Built 1975 Load: 5.8 t ADT: 37
C-584 NON-FA
PoorOver: S FK BURNT R (ROUSE RD)
0.5 MI W JCT ORE 7, Baker, OR
Built 1979 Load: 9.4 t ADT: 193
1123 BRIDGEPORT LN
PoorOver: BURNT R
0.3 MI S JCT CO #1123, Baker, OR
Built 1972 Load: 11.3 t ADT: 116
COUNTY RD 539
PoorOver: UPRR
AT OXMAN OXING FAI-84, Baker, OR
Built 1922 Load: 17.8 t ADT: 156
C-550 SILVER CR LN
PoorOver: CRACKER CREEK
0.0 MI W CO #553, Baker, OR
Built 1964 Load: 18.5 t ADT: 85
C1144/FOOTHILL RD
PoorOver: ROCK CREEK
0.1 M N.OF S.ROCK CR RD, Baker, OR
Built 1991 Load: 25.6 t ADT: 37
EAGLE DRIVE
PoorOver: EAGLE CREEK
NEAR TAMARACK CG, Baker, OR
Built 1957 Load: 28.1 t ADT: 30
FISH CREEK ROAD
PoorOver: FISH CREEK
NO DATA ENTERED, Baker, OR
Built 1953 Load: 28.1 t ADT: 20
C1135-BIDWELL LN
PoorOver: OVERFLOW (POWDER RIVER)
135 MI N JCT CO RD #518, Baker, OR
Built 1966 Load: 29.5 t ADT: 61
1123 BRIDGEPORT LN
PoorOver: BURNT R
0.4 MI S JCT CO RD 1123, Baker, OR
Built 1972 Load: 35.6 t ADT: 116
OR 86 (HWY 012)
PoorOver: SNAKE RIVER(OXBOW)
ORE-IDAHO STATE LINE, Baker, OR
Built 1961 Load: 38.9 t ADT: 98
C-773 NON-FA
PoorOver: POWDER R (DENNY CRK RD)
0.1 MI S JCT ORE 220, Baker, OR
Built 1969 Load: 43.4 t ADT: 53
1600000
PoorOver: N.F.MALHEUR RIVER
43.7 MI EAST OF SENECA, Baker, OR
Built 1959 Load: 43.6 t ADT: 50
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.