US Bridges

Pebble Creek Road over Coon Creek

Good

Columbia County, Oregon · 0050 MI East of Vernonia · Structure no. 222253060 00040

Built
2015
10 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
153 ft
1 main span
Daily traffic
439
2020 count
Owner
County
County Highway Agency

About this bridge

Pebble Creek Road over Coon Creek is a steel stringer/multi-beam or girder carrying Pebble Creek Road over Coon Creek in Columbia County, Oregon. It was built in 2015, so it is 10 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 439 vehicles a day, roughly 20% of them trucks, projected to reach 499 by 2025. The structure is 153 ft (46.6 m) long and 31 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesPebble Creek Road
CrossesCoon Creek
Location0050 MI East of Vernonia
RouteCounty Highway C3060
CountyColumbia County
StateOregon
Coordinates45.85368, -123.16908
Functional classRural Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length153 ft (46.6 m)
Longest span153 ft (46.6 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic439 (2020)
Projected traffic499 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pebble Creek Road over Coon Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is Pebble Creek Road over Coon 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 May 2024.

How much traffic does Pebble Creek Road over Coon Creek carry?

About 439 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Pebble Creek Road over Coon Creek?

The structure is 153 ft (46.6 m) long with a longest span of 153 ft (46.6 m) and a deck 31 ft wide.

Who owns Pebble Creek Road over Coon Creek?

It is owned by the County Highway Agency.