US Bridges

28G over Willanch Creek

Fair

Coos County, Oregon · 6 MI East of HWY 101 · Structure no. 20638 004500350

Built
2005
20 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
1,051
2020 count
Owner
County
County Highway Agency

About this bridge

28G over Willanch Creek is a steel stringer/multi-beam or girder carrying 28G over Willanch Creek in Coos County, Oregon. It was built in 2005, so it is 20 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 1,051 vehicles a day, roughly 10% of them trucks, projected to reach 1,186 by 2025. The structure is 36 ft (11 m) long and 16 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
Carries28G
CrossesWillanch Creek
Location6 MI East of HWY 101
RouteCounty Highway 0A433
CountyCoos County
StateOregon
Coordinates43.41751, -124.13209
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length36 ft (11 m)
Longest span36 ft (11 m)
Deck width16 ft (5 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,051 (2020)
Projected traffic1,186 by 2025
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 28G over Willanch Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is 28G over Willanch 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 July 2024.

How much traffic does 28G over Willanch Creek carry?

About 1,051 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is 28G over Willanch Creek?

The structure is 36 ft (11 m) long with a longest span of 36 ft (11 m) and a deck 16 ft wide.

Who owns 28G over Willanch Creek?

It is owned by the County Highway Agency.