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)

Sort:

Hwy 081

Over: N. Vancouver Way

1.5 MI S OF I-5 JCT, Multnomah, OR

Built 1950 ADT: 5,423

Hwy 001 SB

Over: Columbia River

AT INTERSTATE BRIDGE, Multnomah, OR

Built 1958 ADT: 7,630

Hwy 081

Over: N. Marine Way

5.4 MI N OF PORTLAND CC, Multnomah, OR

Built 1990 ADT: 3,860

OR 99W (HWY 91)

Over: HWY 1W NB TO HWY 1 NB

1.2 MI N OF HWY 144, Multnomah, OR

Built 1985 ADT: 96,556

Hwy 068 Co-Halsey

Over: Hwy 068-82nd Ave

1.7 MI S PORTLAND N C LMT, Multnomah, OR

Built 1956 ADT: 23,696

Hwy 068 Conn

Over: Hwy 002 &WB On Ramp

5.0 Mi. E OF HWY I-5, Multnomah, OR

Built 1985 ADT: 70,411

Conn Rooster Rock

Over: Hwy 002

2.9 MI E OF CORBETT INT, Multnomah, OR

Built 1957 ADT: 24,277

I-5 (HWY 001) CON

Over: SHERIDAN ST

W. END OF MARQUAM BR, Multnomah, OR

Built 1959 ADT: 2,110

HWY 003 NB

Over: HWY 001, HWY 061 & Conns

1.5 MI S OF PORTLAND CC, Multnomah, OR

Built 1959 ADT: 6,995

HWY 3 CONN

Over: HWY 1 SB

0.5 MI N OF ROSS ISLAND B, Multnomah, OR

Built 1926 ADT: 61,611

Hwy 001

Over: SW Hood Ave

2.7 MI N OF MULTNOMAH BVD, Multnomah, OR

Built 1959 ADT: 17,944

SW Corbett Ave

Over: Hwy 001

2.3 MI N OF MULTNOMAH BVD, Multnomah, OR

Built 1959 ADT: 109,170

SW Brier Place

Over: Hwy 001

3.9 MI S OF BURNSIDE BR, Multnomah, OR

Built 1959 ADT: 113,008

I-5 Ramp

Over: SW 4th Street.

1.7 M S OF ROSS ISL. BR., Multnomah, OR

Built 1993 ADT: 103

SW 19th Ave

Over: Hwy 001

1.4 M N OF BARBUR BLVD, Multnomah, OR

Built 1959 ADT: 49,898

SPRING GARDEN RD

Over: I-5 (HWY 001)

1.3 MI N OF BARBUR BLVD, Multnomah, OR

Built 1959 ADT: 96,559

I-5 (HWY 001)

Over: SW 26TH AVE

1.0 MI N OF BARBUR BLVD, Multnomah, OR

Built 1959 ADT: 113,800

HWY 91

Over: HWY 1

3.0 MI NE TIGARD CC, Multnomah, OR

Built 1959 ADT: 7,880

HY 91 SB TO 1 SB

Over: HWY 1 SB OFF RAMP

0.4 MI S OF TAYLORS FERRY, Multnomah, OR

Built 1959 ADT: 3,684

HWY 91

Over: SW 26TH AVE

0.4 MI S MULTNOMAH BLVD, Multnomah, OR

Built 1958 ADT: 23,000

Terwilliger Blvd.

Over: Hwy 001

1.7 M S OF ROSS ISL. BR., Multnomah, OR

Built 1993 ADT: 7,300

Columbia Blvd

Over: Hwy 068

5.5 MI NE OF PORTLAND CC, Multnomah, OR

Built 1960 ADT: 12,501

Hwy 123

Over: Hwy 068

5.5 MI NE PORTLAND CC, Multnomah, OR

Built 1958 ADT: 20,030

Multnomah Blvd

Over: Hwy 001

1.5 MI N OF BARBUR BLVD, Multnomah, OR

Built 1959 ADT: 99,796

Corbett Oxg Hwy 2

Over: Hwy 002

AT CORBETT, Multnomah, OR

Built 1960 ADT: 24,565

HWY 40 CAPITOL HWY

Over: B-139 X BARBUR BLVD

CAPITOL HWY AT BARBUR BVD, Multnomah, OR

Built 1959 ADT: 8,149

Flint Ave.

Over: Hwy 001

1.0 MI N OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 10,933

Vancouver Ave

Over: HWY 1 I-5

0.9 MI N OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 53,047

Weidler St

Over: Hwy 001

0.8 MI N OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 105,729

Williams Ave.

Over: Hwy 001

0.8 MI N OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 106,094

Broadway St.

Over: Hwy 001

0.8 MI N OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 106,094

Hwy 001

Over: Multnomah & Holladay St

0.5 MI N OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 120,400

HY 2 WB TO HY 1 NB

Over: UPRR

0.5 MI E PORTLAND CC, Multnomah, OR

Built 1963 ADT: 6,500

WB CON TO HWY 1 SB

Over: HWY 1

0.1 MI E PORTLAND CC, Multnomah, OR

Built 1963 ADT: 33,663

HY 1 SB TO HY 2 EB

Over: HWY 1 I-5

0.5 MI E OF PORTLAND CC, Multnomah, OR

Built 1963 ADT: 64,137

HY 1 NB TO HY 2

Over: UPRR & CONN 6

0.1 MI N OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 2,710

MORRISON ST

Over: I-5 & OR 99E

BETWEEN I-5 & SE GRAND AV, Multnomah, OR

Built 1955 ADT: 64,338

HWY 1 TO BELMONT

Over: HWY 1 I-5

0.4 MI S OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 2,400

BELMONT TO HWY 1

Over: CONN 3 TO HWY 1 NB

0.4 MI S OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 40,747

HWY 1 TO MORRISON

Over: HWY 1 SB CONN 7

0.3 MI S OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 3,360

MORRISON TO HWY 1

Over: CONN 4 TO HWY 1 NB

0.3 MI S OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 2,400

OFF RAMP

Over: WATER AVE CONN EB

EAST END MORRISON BR, Multnomah, OR

Built 1958 ADT: 15,294

I-5 (HWY 001) SB

Over: MARQUAM BRIDGE RAMP

0.8 MI S OF BURNSIDE BR, Multnomah, OR

Built 1966 ADT: 790

I-5 (HWY 001) NB

Over: MARQUAM BRIDGE RAMP

0.8 MI S OF BURNSIDE BR, Multnomah, OR

Built 1966 ADT: 790

I-5 (HWY 001) CON

Over: City Streets/OMSI

E. BANK OF WILLAMETTE R., Multnomah, OR

Built 1992 ADT: 51,733

HY 61SB TO HY 1NB

Over: W MARQUAM BR RAMPS

W MARQUAM INTCHGE, Multnomah, OR

Built 1965 ADT: 35,824

HY 1SB TO HY 61NB

Over: MARQ RAMP TO HWY 61 NB

WEST MARQUAM INTERCHANGE, Multnomah, OR

Built 1965 ADT: 1,384

I-5 (HWY 001) SB

Over: MARQUAM RAMP SB

WEST MARQUAM INTERCHANGE, Multnomah, OR

Built 1966 ADT: 2,030

I-5 (HWY 001) NB

Over: SURFACE STREETS

WEST MARQUAM INTERCHANGE, Multnomah, OR

Built 1966 ADT: 61,611

HY 61SB CONN HY1SB

Over: Water Ave

W. MARQUAM INTERCHANGE, Multnomah, OR

Built 1966 ADT: 1,000

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

Related

Browse all → | Rankings →

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026