US Bridges

Jackson School RD over Waible Creek

Fair

Washington County, Oregon · 0015 S Meek Road · Structure no. 671315108400118

Built
1972
53 years old
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
56 ft
2 main spans
Daily traffic
10,382
2020 count
Owner
County
County Highway Agency

About this bridge

Jackson School RD over Waible Creek is a prestressed concrete slab carrying Jackson School RD over Waible Creek in Washington County, Oregon. It was built in 1972, so it is 53 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 10,382 vehicles a day, roughly 10% of them trucks, projected to reach 11,132 by 2025. The structure is 56 ft (17.1 m) long and 36 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesJackson School RD
CrossesWaible Creek
Location0015 S Meek Road
RouteCounty Highway C1900
StateOregon
Coordinates45.56507, -122.97128
Functional classUrban Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span28 ft (8.5 m)
Deck width36 ft (10.9 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,382 (2020)
Projected traffic11,132 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Jackson School RD over Waible Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Jackson School RD over Waible Creek 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 August 2024.

How much traffic does Jackson School RD over Waible Creek carry?

About 10,382 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Jackson School RD over Waible Creek?

The structure is 56 ft (17.1 m) long with a longest span of 28 ft (8.5 m) and a deck 36 ft wide.

Who owns Jackson School RD over Waible Creek?

It is owned by the County Highway Agency.