US Bridges

242nd Ave over Johnson Creek

Fair

Multnomah County, Oregon · 13 MI E Clackamas CO Line · Structure no. 25T07A000000000

Built
1994
31 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
7,652
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

242nd Ave over Johnson Creek is a prestressed concrete slab carrying 242nd Ave over Johnson Creek in Multnomah County, Oregon. It was built in 1994, so it is 31 years old, younger 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 7,652 vehicles a day, roughly 10% of them trucks, projected to reach 8,439 by 2025. The structure is 63 ft (19.2 m) long and 58 ft wide.

Location

Open in Google Maps
Carries242nd Ave
CrossesJohnson Creek
Location13 MI E Clackamas CO Line
RouteCounty Highway 9877
CountyMultnomah County
StateOregon
Coordinates45.48077, -122.41429
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.7 US tons
Inventory rating61.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span63 ft (19.2 m)
Deck width58 ft (17.7 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,652 (2020)
Projected traffic8,439 by 2025
Trucks10%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 242nd Ave over Johnson Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is 242nd Ave over Johnson 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 July 2024.

How much traffic does 242nd Ave over Johnson Creek carry?

About 7,652 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is 242nd Ave over Johnson Creek?

The structure is 63 ft (19.2 m) long with a longest span of 63 ft (19.2 m) and a deck 58 ft wide.

Who owns 242nd Ave over Johnson Creek?

It is owned by the City or Municipal Highway Agency.