US Bridges

Or 230 (hwy 233) over Muir Creek

Fair

Douglas County, Oregon · 10.32 MI N JCT HWY 022 · Structure no. 03462 233 01032

Built
1933
92 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete
Length
127 ft
3 main spans
Daily traffic
953
2022 count
Owner
State
State Highway Agency

About this bridge

Or 230 (hwy 233) over Muir Creek is a concrete tee beam carrying Or 230 (hwy 233) over Muir Creek in Douglas County, Oregon. It was built in 1933, so it is 92 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 953 vehicles a day, roughly 28% of them trucks, projected to reach 1,200 by 2042. The structure is 127 ft (38.7 m) long and 33 ft wide. If it were closed, the detour would be 65.2 mi (105 km).

CarriesOr 230 (hwy 233)
CrossesMuir Creek
Location10.32 MI N JCT HWY 022
RouteState Highway 230
StateOregon
Coordinates43.04807, -122.35083
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.9 US tons
Inventory rating22.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length127 ft (38.7 m)
Longest span60 ft (18.3 m)
Deck width33 ft (10 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic953 (2022)
Projected traffic1,200 by 2042
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed65.2 mi (105 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 230 (hwy 233) over Muir Creek built?

It was built in 1933, making it 92 years old in 2025.

What condition is Or 230 (hwy 233) over Muir 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 Or 230 (hwy 233) over Muir Creek carry?

About 953 vehicles per day (2022 count), of which roughly 28% are trucks.

How long is Or 230 (hwy 233) over Muir Creek?

The structure is 127 ft (38.7 m) long with a longest span of 60 ft (18.3 m) and a deck 33 ft wide.

Who owns Or 230 (hwy 233) over Muir Creek?

It is owned by the State Highway Agency.