US Bridges

Engstrom Road over Jackson Creek

Fair

Clackamas County, Oregon · 01.5 MI E of HWY 211 · Structure no. 06336 000

Built
1979
46 years old
Condition
Fair
inspected April 2023
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
70
2020 count
Owner
County
County Highway Agency

About this bridge

Engstrom Road over Jackson Creek is a prestressed concrete slab carrying Engstrom Road over Jackson Creek in Clackamas County, Oregon. It was built in 1979, so it is 46 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 70 vehicles a day, roughly 26% of them trucks, projected to reach 75 by 2025. The structure is 25 ft (7.6 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesEngstrom Road
CrossesJackson Creek
Location01.5 MI E of HWY 211
RouteCounty Highway C1029
StateOregon
Coordinates45.17924, -122.38706
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating42.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2020)
Projected traffic75 by 2025
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Engstrom Road over Jackson Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is Engstrom Road over Jackson 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 April 2023.

How much traffic does Engstrom Road over Jackson Creek carry?

About 70 vehicles per day (2020 count), of which roughly 26% are trucks.

How long is Engstrom Road over Jackson Creek?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 31 ft wide.

Who owns Engstrom Road over Jackson Creek?

It is owned by the County Highway Agency.