US Bridges

SW 4th Ave. over Canyon Creek

Good

Grant County, Oregon · Intersection of Brent DR · Structure no. 23B003000000000

Built
1962
63 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
183
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

SW 4th Ave. over Canyon Creek is a concrete slab carrying SW 4th Ave. over Canyon Creek in Grant County, Oregon. It was built in 1962, so it is 63 years old, older 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 183 vehicles a day, roughly 10% of them trucks, projected to reach 213 by 2025. The structure is 27 ft (8.2 m) long and 31 ft wide.

Location

Open in Google Maps
CarriesSW 4th Ave.
CrossesCanyon Creek
LocationIntersection of Brent DR
RouteCity Street C0000
CountyGrant County
StateOregon
Coordinates44.40964, -118.95328
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 alignment6: Equal to present minimum criteria
Operating rating85 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span26 ft (7.9 m)
Deck width31 ft (9.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic183 (2020)
Projected traffic213 by 2025
Trucks10%
Lanes on structure2
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 SW 4th Ave. over Canyon Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is SW 4th Ave. over Canyon Creek 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 SW 4th Ave. over Canyon Creek carry?

About 183 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is SW 4th Ave. over Canyon Creek?

The structure is 27 ft (8.2 m) long with a longest span of 26 ft (7.9 m) and a deck 31 ft wide.

Who owns SW 4th Ave. over Canyon Creek?

It is owned by the City or Municipal Highway Agency.