US Bridges

HWY 29 over Gales Creek Oflow No. 1

Fair

Washington County, Oregon · 15.5 MI from Oshd Scale · Structure no. 16129 029 01943

Built
1975
50 years old
Condition
Fair
inspected April 2024
Type
Slab
Prestressed Concrete
Length
150 ft
3 main spans
Daily traffic
13,243
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 29 over Gales Creek Oflow No. 1 is a prestressed concrete slab carrying HWY 29 over Gales Creek Oflow No. 1 in Washington County, Oregon. It was built in 1975, so it is 50 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 13,243 vehicles a day, roughly 7% of them trucks, projected to reach 14,700 by 2042. The structure is 150 ft (45.7 m) long and 60 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesHWY 29
CrossesGales Creek Oflow No. 1
Location15.5 MI from Oshd Scale
RouteState Highway 47
CountyWashington County
StateOregon
Coordinates45.50799, -123.10787
Functional classUrban Other Principal 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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span50 ft (15.3 m)
Deck width60 ft (18.3 m)
Roadway width49 ft (14.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,243 (2022)
Projected traffic14,700 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY 29 over Gales Creek Oflow No. 1 built?

It was built in 1975, making it 50 years old in 2025.

What condition is HWY 29 over Gales Creek Oflow No. 1 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 April 2024.

How much traffic does HWY 29 over Gales Creek Oflow No. 1 carry?

About 13,243 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is HWY 29 over Gales Creek Oflow No. 1?

The structure is 150 ft (45.7 m) long with a longest span of 50 ft (15.3 m) and a deck 60 ft wide.

Who owns HWY 29 over Gales Creek Oflow No. 1?

It is owned by the State Highway Agency.