Multnomah County, OR

474 public highway bridges

Multnomah County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Multnomah County, Oregon contains 474 public highway bridges. Roughly 9.1% are rated “Good,” 37.8% “Fair,” and 2.5% “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.

474
Total Bridges
9.1%
Good
37.8%
Fair
2.5%
Poor Condition

Condition Distribution

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

All Bridges (474)

Hwy 081

Unknown

Over: N. Vancouver Way

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

Built 1950 ADT: 5,423

Hwy 001 SB

Unknown

Over: Columbia River

AT INTERSTATE BRIDGE, Multnomah, OR

Built 1958 ADT: 7,630

Hwy 081

Unknown

Over: N. Marine Way

5.4 MI N OF PORTLAND CC, Multnomah, OR

Built 1990 ADT: 3,860

OR 99W (HWY 91)

Unknown

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

Unknown

Over: Hwy 068-82nd Ave

1.7 MI S PORTLAND N C LMT, Multnomah, OR

Built 1956 ADT: 23,696

Hwy 068 Conn

Unknown

Over: Hwy 002 &WB On Ramp

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

Built 1985 ADT: 70,411

Conn Rooster Rock

Unknown

Over: Hwy 002

2.9 MI E OF CORBETT INT, Multnomah, OR

Built 1957 ADT: 24,277

I-5 (HWY 001) CON

Unknown

Over: SHERIDAN ST

W. END OF MARQUAM BR, Multnomah, OR

Built 1959 ADT: 2,110

HWY 003 NB

Unknown

Over: HWY 001, HWY 061 & Conns

1.5 MI S OF PORTLAND CC, Multnomah, OR

Built 1959 ADT: 6,995

HWY 3 CONN

Unknown

Over: HWY 1 SB

0.5 MI N OF ROSS ISLAND B, Multnomah, OR

Built 1926 ADT: 61,611

Hwy 001

Unknown

Over: SW Hood Ave

2.7 MI N OF MULTNOMAH BVD, Multnomah, OR

Built 1959 ADT: 17,944

SW Corbett Ave

Unknown

Over: Hwy 001

2.3 MI N OF MULTNOMAH BVD, Multnomah, OR

Built 1959 ADT: 109,170

SW Brier Place

Unknown

Over: Hwy 001

3.9 MI S OF BURNSIDE BR, Multnomah, OR

Built 1959 ADT: 113,008

I-5 Ramp

Unknown

Over: SW 4th Street.

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

Built 1993 ADT: 103

SW 19th Ave

Unknown

Over: Hwy 001

1.4 M N OF BARBUR BLVD, Multnomah, OR

Built 1959 ADT: 49,898

SPRING GARDEN RD

Unknown

Over: I-5 (HWY 001)

1.3 MI N OF BARBUR BLVD, Multnomah, OR

Built 1959 ADT: 96,559

I-5 (HWY 001)

Unknown

Over: SW 26TH AVE

1.0 MI N OF BARBUR BLVD, Multnomah, OR

Built 1959 ADT: 113,800

HWY 91

Unknown

Over: HWY 1

3.0 MI NE TIGARD CC, Multnomah, OR

Built 1959 ADT: 7,880

HY 91 SB TO 1 SB

Unknown

Over: HWY 1 SB OFF RAMP

0.4 MI S OF TAYLORS FERRY, Multnomah, OR

Built 1959 ADT: 3,684

HWY 91

Unknown

Over: SW 26TH AVE

0.4 MI S MULTNOMAH BLVD, Multnomah, OR

Built 1958 ADT: 23,000

Terwilliger Blvd.

Unknown

Over: Hwy 001

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

Built 1993 ADT: 7,300

Columbia Blvd

Unknown

Over: Hwy 068

5.5 MI NE OF PORTLAND CC, Multnomah, OR

Built 1960 ADT: 12,501

Hwy 123

Unknown

Over: Hwy 068

5.5 MI NE PORTLAND CC, Multnomah, OR

Built 1958 ADT: 20,030

Multnomah Blvd

Unknown

Over: Hwy 001

1.5 MI N OF BARBUR BLVD, Multnomah, OR

Built 1959 ADT: 99,796

Corbett Oxg Hwy 2

Unknown

Over: Hwy 002

AT CORBETT, Multnomah, OR

Built 1960 ADT: 24,565

HWY 40 CAPITOL HWY

Unknown

Over: B-139 X BARBUR BLVD

CAPITOL HWY AT BARBUR BVD, Multnomah, OR

Built 1959 ADT: 8,149

Flint Ave.

Unknown

Over: Hwy 001

1.0 MI N OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 10,933

Vancouver Ave

Unknown

Over: HWY 1 I-5

0.9 MI N OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 53,047

Weidler St

Unknown

Over: Hwy 001

0.8 MI N OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 105,729

Williams Ave.

Unknown

Over: Hwy 001

0.8 MI N OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 106,094

Broadway St.

Unknown

Over: Hwy 001

0.8 MI N OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 106,094

Hwy 001

Unknown

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

Unknown

Over: UPRR

0.5 MI E PORTLAND CC, Multnomah, OR

Built 1963 ADT: 6,500

WB CON TO HWY 1 SB

Unknown

Over: HWY 1

0.1 MI E PORTLAND CC, Multnomah, OR

Built 1963 ADT: 33,663

HY 1 SB TO HY 2 EB

Unknown

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

Unknown

Over: UPRR & CONN 6

0.1 MI N OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 2,710

MORRISON ST

Unknown

Over: I-5 & OR 99E

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

Built 1955 ADT: 64,338

HWY 1 TO BELMONT

Unknown

Over: HWY 1 I-5

0.4 MI S OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 2,400

BELMONT TO HWY 1

Unknown

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

Unknown

Over: HWY 1 SB CONN 7

0.3 MI S OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 3,360

MORRISON TO HWY 1

Unknown

Over: CONN 4 TO HWY 1 NB

0.3 MI S OF BURNSIDE BR, Multnomah, OR

Built 1963 ADT: 2,400

OFF RAMP

Unknown

Over: WATER AVE CONN EB

EAST END MORRISON BR, Multnomah, OR

Built 1958 ADT: 15,294

I-5 (HWY 001) SB

Unknown

Over: MARQUAM BRIDGE RAMP

0.8 MI S OF BURNSIDE BR, Multnomah, OR

Built 1966 ADT: 790

I-5 (HWY 001) NB

Unknown

Over: MARQUAM BRIDGE RAMP

0.8 MI S OF BURNSIDE BR, Multnomah, OR

Built 1966 ADT: 790

I-5 (HWY 001) CON

Unknown

Over: City Streets/OMSI

E. BANK OF WILLAMETTE R., Multnomah, OR

Built 1992 ADT: 51,733

HY 61SB TO HY 1NB

Unknown

Over: W MARQUAM BR RAMPS

W MARQUAM INTCHGE, Multnomah, OR

Built 1965 ADT: 35,824

HY 1SB TO HY 61NB

Unknown

Over: MARQ RAMP TO HWY 61 NB

WEST MARQUAM INTERCHANGE, Multnomah, OR

Built 1965 ADT: 1,384

I-5 (HWY 001) SB

Unknown

Over: MARQUAM RAMP SB

WEST MARQUAM INTERCHANGE, Multnomah, OR

Built 1966 ADT: 2,030

I-5 (HWY 001) NB

Unknown

Over: SURFACE STREETS

WEST MARQUAM INTERCHANGE, Multnomah, OR

Built 1966 ADT: 61,611

HY 61SB CONN HY1SB

Unknown

Over: Water Ave

W. MARQUAM INTERCHANGE, Multnomah, OR

Built 1966 ADT: 1,000

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 PlainBridge 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.