US Bridges

HWY 200 over N Fork Siuslaw River

Fair

Lane County, Oregon · 18.4 MI S JCT HWY 62 · Structure no. 04059 200 03793

Built
1957
68 years old
Condition
Fair
inspected October 2023
Type
Channel Beam
Concrete
Length
57 ft
3 main spans
Daily traffic
1,368
2022 count
Owner
State
State Highway Agency

About this bridge

HWY 200 over N Fork Siuslaw River is a concrete channel beam carrying HWY 200 over N Fork Siuslaw River in Lane County, Oregon. It was built in 1957, so it is 68 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 5 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 1,368 vehicles a day, roughly 18% of them trucks, projected to reach 1,700 by 2042. The structure is 57 ft (17.4 m) long and 31 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesHWY 200
CrossesN Fork Siuslaw River
Location18.4 MI S JCT HWY 62
RouteState Highway 200
CountyLane County
StateOregon
Coordinates43.8353, -123.2394
Functional classRural Major Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
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 rating34.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,368 (2022)
Projected traffic1,700 by 2042
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 HWY 200 over N Fork Siuslaw River built?

It was built in 1957, making it 68 years old in 2025.

What condition is HWY 200 over N Fork Siuslaw River 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 October 2023.

How much traffic does HWY 200 over N Fork Siuslaw River carry?

About 1,368 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is HWY 200 over N Fork Siuslaw River?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns HWY 200 over N Fork Siuslaw River?

It is owned by the State Highway Agency.