US Bridges

Summit Drive over Springbrook Creek

PoorPosted for load

Clackamas County, Oregon · 00.2 MI S of Iron Mt RD · Structure no. 06456 000 040

Built
1956
69 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
133 ft
4 main spans
Daily traffic
503
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Summit Drive over Springbrook Creek is a steel stringer/multi-beam or girder carrying Summit Drive over Springbrook Creek in Clackamas County, Oregon. It was built in 1956, so it is 69 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 503 vehicles a day, roughly 10% of them trucks, projected to reach 568 by 2025. The structure is 133 ft (40.5 m) long and 24 ft wide.

CarriesSummit Drive
CrossesSpringbrook Creek
Location00.2 MI S of Iron Mt RD
RouteCounty Highway C1613
StateOregon
Coordinates45.40999, -122.7046
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating13.9 US tons
Inventory rating10.7 US tons

Structure

MaterialSteel
DeckConcrete, precast panels
Main spans4
Design loadUnknown
Structure length133 ft (40.5 m)
Longest span38 ft (11.6 m)
Deck width24 ft (7.2 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic503 (2020)
Projected traffic568 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$681,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Summit Drive over Springbrook Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Summit Drive over Springbrook Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does Summit Drive over Springbrook Creek carry?

About 503 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Summit Drive over Springbrook Creek?

The structure is 133 ft (40.5 m) long with a longest span of 38 ft (11.6 m) and a deck 24 ft wide.

Who owns Summit Drive over Springbrook Creek?

It is owned by the City or Municipal Highway Agency.