US Bridges

Upper Island RD over Small Creek

Fair

Yamhill County, Oregon · On Grand Island · Structure no. 11789 000

Built
1961
64 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
131
2020 count
Owner
County
County Highway Agency

About this bridge

Upper Island RD over Small Creek is a prestressed concrete slab carrying Upper Island RD over Small Creek in Yamhill County, Oregon. It was built in 1961, so it is 64 years old, older 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 131 vehicles a day, projected to reach 146 by 2025. The structure is 37 ft (11.3 m) long and 18 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUpper Island RD
CrossesSmall Creek
LocationOn Grand Island
RouteCounty Highway C0476
CountyYamhill County
StateOregon
Coordinates45.11734, -123.01178
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.1 US tons
Inventory rating47.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span36 ft (11 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic131 (2020)
Projected traffic146 by 2025
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$247,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Upper Island RD over Small Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is Upper Island RD over Small 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 September 2024.

How much traffic does Upper Island RD over Small Creek carry?

About 131 vehicles per day (2020 count).

How long is Upper Island RD over Small Creek?

The structure is 37 ft (11.3 m) long with a longest span of 36 ft (11 m) and a deck 18 ft wide.

Who owns Upper Island RD over Small Creek?

It is owned by the County Highway Agency.