US Bridges

Or 47 (hwy 102) over Cummings Creek

GoodPosted for load

Washington County, Oregon · 2.0 MI N HWY 47 JCT · Structure no. 04953A102 07509

Built
1954
71 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
21 ft
1 main span
Daily traffic
3,277
2022 count
Owner
State
State Highway Agency

About this bridge

Or 47 (hwy 102) over Cummings Creek is a concrete slab carrying Or 47 (hwy 102) over Cummings Creek in Washington County, Oregon. It was built in 1954, so it is 71 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for other load-capacity restriction.

It carries about 3,277 vehicles a day, roughly 14% of them trucks, projected to reach 3,900 by 2042. The structure is 21 ft (6.4 m) long and 30 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

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CarriesOr 47 (hwy 102)
CrossesCummings Creek
Location2.0 MI N HWY 47 JCT
RouteState Highway 47
CountyWashington County
StateOregon
Coordinates45.70859, -123.20266
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating23.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,277 (2022)
Projected traffic3,900 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18.6 mi (30 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$108,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 47 (hwy 102) over Cummings Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is Or 47 (hwy 102) over Cummings Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Or 47 (hwy 102) over Cummings Creek carry?

About 3,277 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Or 47 (hwy 102) over Cummings Creek?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 30 ft wide.

Who owns Or 47 (hwy 102) over Cummings Creek?

It is owned by the State Highway Agency.