Multnomah County, OR

474 public highway bridges

Multnomah County Bridge Snapshot

Multnomah County, Oregon contains 474 public highway bridges in the FHWA National Bridge Inventory. Roughly 9.1% are rated “Good,” 37.8% “Fair,” 2.5% “Poor,” and 2.5% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in OR are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

474
Total Bridges
9.1%
Good
2.5%
Poor
2.5%
Structurally Deficient

Condition Distribution

Good
9.1% (43)
Fair
37.8% (179)
Poor
2.5% (12)
SD
2.5% (12)

All Bridges (474)

NE 148TH AVE

Good

Over: B-023 x COLUMBIA SLOUGH

0.3 MILES N OF SANDY BLVD, Multnomah, OR

Built 2000 Load: 46.3 t ADT: 6,753

242ND AVE

Good

Over: JOHNSON CREEK

13 MI E CLACKAMAS CO LINE, Multnomah, OR

Built 1994 Load: 46.3 t ADT: 7,652

282nd St.

Good

Over: Johnson Creek

032 MI SW BORING, Multnomah, OR

Built 2008 Load: 48.6 t ADT: 3,318

NE 138TH AVE

Good

Over: B-086 X COLUMBIA SLOUGH

00.3 MI N OF SANDY BLVD, Multnomah, OR

Built 2000 Load: 51.7 t ADT: 10,129

ROAD

Good

Over: FIR CREEK

S-14, T-1S, R-6E, WM, Multnomah, OR

Built 1990 Load: 55.4 t ADT: 4

NE 207TH AVE

Good

Over: FAIRVIEW CREEK

.5 mi N of Glisan St, Multnomah, OR

Built 2000 Load: 56.2 t ADT: 10,797

185TH AVE

Good

Over: SLOUGH

.25 MI N OF SANDY BLVD, Multnomah, OR

Built 1992 Load: 56.2 t ADT: 5,101

NE AIRPORT WAY

Good

Over: B-137 X COLUMBIA SLOUGH

APW BRIDGE B NR PUMP STA., Multnomah, OR

Built 1992 Load: 61.7 t ADT: 15,271

NW Reeder Rd.

Good

Over: Dairy Creek

MP 4.89, Multnomah, OR

Built 2018 Load: 63.5 t ADT: 1,300

FOSTER RD

Good

Over: KELLEY CREEK

MP 6.67 FOSTER CR RD, Multnomah, OR

Built 2006 Load: 69.0 t ADT: 15,109

FAS A656

Good

Over: Beaver Creek

MP 14.50, Multnomah, OR

Built 2019 Load: 69.0 t ADT: 6,445

SE 122ND AVE

Good

Over: B-99 OVER JOHNSON CREEK

00.4 MI S OF FOSTER ROAD, Multnomah, OR

Built 2020 Load: 69.0 t ADT: 2,119

Hwy 100

Poor

Over: Viaduct

0.2 MI W MULTNOMAH FALLS, Multnomah, OR

Built 1914 Load: 4.5 t ADT: 781

FAS A656

Poor

Over: SANDY RIVER

040 MI SE TROUTDALE, Multnomah, OR

Built 1914 Load: 11.0 t ADT: 6,445

US26 (HWY 026AC)

Poor

Over: ARTHUR ST VIADUCT

1.0 MI SE PORTLAND CC, Multnomah, OR

Built 1947 Load: 13.3 t ADT: 8,795

WILLAMETTE BLVD

Poor

Over: BURLINGTON NORTHERN R&R

N. WILLAMETTE OVER BURLIN, Multnomah, OR

Built 1909 Load: 19.1 t ADT: 10,361

FESSENDEN ST

Poor

Over: BURLINGTON NORTHERN R&R

FESSENDEN ST. OVER BURLIN, Multnomah, OR

Built 1909 Load: 19.1 t ADT: 4,931

Hwy 123

Poor

Over: BNSF

N. LOMBARD ST OVER BURLIN, Multnomah, OR

Built 1909 Load: 19.4 t ADT: 13,970

HWY 1W (STEEL BR)

Poor

Over: WILLAMETTE RIVER

0.4 MI NE PORTLAND CC, Multnomah, OR

Built 1910 Load: 19.8 t ADT: 10,362

NW BROADWAY RAMP

Poor

Over: BROADWAY ST CONN

WEST END BROADWAY BR, Multnomah, OR

Built 1913 Load: 21.4 t ADT: 30,388

COLUMBIA BLVD

Poor

Over: B-78 OVER BNRR

2 MILES NW OF JCT. I-5, Multnomah, OR

Built 1909 Load: 23.3 t ADT: 13,910

Hwy 081

Poor

Over: UPRR

3.9 MI N PORTLAND CC, Multnomah, OR

Built 1916 Load: 29.2 t ADT: 14,354

I-84 (HWY 002) EB

Poor

Over: MCCORD CREEK

5.7 MI W CASCADE LOCKS, Multnomah, OR

Built 1962 Load: 32.4 t ADT: 12,054

N BURGARD ST

Structurally Deficient

Over: B-1 OVER UP/SPRR

AT TERMINAL NO 4, Multnomah, OR

Built 1930 Load: 17.5 t ADT: 13,113

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

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial