US Bridges

HWY 171 (or 224) over N/A

Good

Clackamas County, Oregon · MP 30.70 · Structure no. 18243 171 03070

Built
1996
29 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete
Length
140 ft
1 main span
Daily traffic
912
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 171 (or 224) over N/A is a concrete slab carrying HWY 171 (or 224) over N/A in Clackamas County, Oregon. It was built in 1996, so it is 29 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 912 vehicles a day, roughly 23% of them trucks, projected to reach 920 by 2042. The structure is 140 ft (42.7 m) long and 40 ft wide.

CarriesHWY 171 (or 224)
CrossesN/A
LocationMP 30.70
RouteState Highway 224
StateOregon
Coordinates45.22464, -122.24677
Functional classRural Major 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.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.8 US tons
Inventory rating25.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length140 ft (42.7 m)
Longest span70 ft (21.3 m)
Deck width40 ft (12.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic912 (2022)
Projected traffic920 by 2042
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY 171 (or 224) over N/A built?

It was built in 1996, making it 29 years old in 2025.

What condition is HWY 171 (or 224) over N/A 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 2023.

How much traffic does HWY 171 (or 224) over N/A carry?

About 912 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is HWY 171 (or 224) over N/A?

The structure is 140 ft (42.7 m) long with a longest span of 70 ft (21.3 m) and a deck 40 ft wide.

Who owns HWY 171 (or 224) over N/A?

It is owned by the State Highway Agency.