US Bridges

Childs RD over Oswego Canal

Good

Clackamas County, Oregon · 1.6 MI W of Stafford RD · Structure no. 18095 039 00163

Built
2000
25 years old
Condition
Good
inspected May 2023
Type
Slab
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
9,500
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Childs RD over Oswego Canal is a prestressed concrete slab carrying Childs RD over Oswego Canal in Clackamas County, Oregon. It was built in 2000, so it is 25 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,500 vehicles a day, roughly 6% of them trucks, projected to reach 10,400 by 2038. The structure is 64 ft (19.4 m) long and 40 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesChilds RD
CrossesOswego Canal
Location1.6 MI W of Stafford RD
RouteCounty Highway 9544
StateOregon
Coordinates45.3863, -122.72047
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length64 ft (19.4 m)
Longest span62 ft (19 m)
Deck width40 ft (12.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,500 (2018)
Projected traffic10,400 by 2038
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$333,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Childs RD over Oswego Canal built?

It was built in 2000, making it 25 years old in 2025.

What condition is Childs RD over Oswego Canal 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 May 2023.

How much traffic does Childs RD over Oswego Canal carry?

About 9,500 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Childs RD over Oswego Canal?

The structure is 64 ft (19.4 m) long with a longest span of 62 ft (19 m) and a deck 40 ft wide.

Who owns Childs RD over Oswego Canal?

It is owned by the City or Municipal Highway Agency.