US Bridges

HWY 1W over Grover Street

Fair

Multnomah County, Oregon · 1.5 MI S Portland Cc · Structure no. 06895 01W 00167

Built
1948
77 years old
Condition
Fair
inspected February 2024
Type
Frame
Concrete Continuous
Length
70 ft
2 main spans
Daily traffic
18,583
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 1W over Grover Street is a concrete continuous frame carrying HWY 1W over Grover Street in Multnomah County, Oregon. It was built in 1948, so it is 77 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 18,583 vehicles a day, roughly 1% of them trucks, projected to reach 22,000 by 2042. The structure is 70 ft (21.2 m) long and 82 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHWY 1W
CrossesGrover Street
Location1.5 MI S Portland Cc
RouteState Highway 99
StateOregon
Coordinates45.50007, -122.67775
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating22.8 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length70 ft (21.2 m)
Longest span34 ft (10.4 m)
Deck width82 ft (25 m)
Roadway width74 ft (22.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,583 (2022)
Projected traffic22,000 by 2042
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$932,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY 1W over Grover Street built?

It was built in 1948, making it 77 years old in 2025.

What condition is HWY 1W over Grover Street in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does HWY 1W over Grover Street carry?

About 18,583 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is HWY 1W over Grover Street?

The structure is 70 ft (21.2 m) long with a longest span of 34 ft (10.4 m) and a deck 82 ft wide.

Who owns HWY 1W over Grover Street?

It is owned by the State Highway Agency.