US Bridges

Porter RD over Council Creek

Good

Washington County, Oregon · 007 MI N HWY # 8 · Structure no. 22520_073100070

Built
2017
8 years old
Condition
Good
inspected August 2024
Type
Slab
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
417
2020 count
Owner
County
County Highway Agency

About this bridge

Porter RD over Council Creek is a prestressed concrete slab carrying Porter RD over Council Creek in Washington County, Oregon. It was built in 2017, so it is 8 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 417 vehicles a day, roughly 5% of them trucks, projected to reach 460 by 2025. The structure is 55 ft (16.8 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesPorter RD
CrossesCouncil Creek
Location007 MI N HWY # 8
RouteCounty Highway C0430
StateOregon
Coordinates45.31471, -123.05137
Functional classUrban 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 rating59.3 US tons
Inventory rating45.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length55 ft (16.8 m)
Longest span55 ft (16.8 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic417 (2020)
Projected traffic460 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$306,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Porter RD over Council Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Porter RD over Council 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 August 2024.

How much traffic does Porter RD over Council Creek carry?

About 417 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Porter RD over Council Creek?

The structure is 55 ft (16.8 m) long with a longest span of 55 ft (16.8 m) and a deck 24 ft wide.

Who owns Porter RD over Council Creek?

It is owned by the County Highway Agency.