US Bridges

North Fork Road over Llewellyn Creek

Fair

Coos County, Oregon · 0087 E JCT 1A AND42 South · Structure no. 11C01 001A00087

Built
1972
53 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
151 ft
3 main spans
Daily traffic
425
2020 count
Owner
County
County Highway Agency

About this bridge

North Fork Road over Llewellyn Creek is a prestressed concrete slab carrying North Fork Road over Llewellyn Creek in Coos County, Oregon. It was built in 1972, so it is 53 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 425 vehicles a day, roughly 10% of them trucks, projected to reach 480 by 2025. The structure is 151 ft (46 m) long and 24 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesNorth Fork Road
CrossesLlewellyn Creek
Location0087 E JCT 1A AND42 South
RouteCounty Highway C001A
CountyCoos County
StateOregon
Coordinates43.08829, -124.12595
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 alignment6: Equal to present minimum criteria
Operating rating61.1 US tons
Inventory rating47.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length151 ft (46 m)
Longest span48 ft (14.6 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic425 (2020)
Projected traffic480 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 North Fork Road over Llewellyn Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is North Fork Road over Llewellyn 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 North Fork Road over Llewellyn Creek carry?

About 425 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is North Fork Road over Llewellyn Creek?

The structure is 151 ft (46 m) long with a longest span of 48 ft (14.6 m) and a deck 24 ft wide.

Who owns North Fork Road over Llewellyn Creek?

It is owned by the County Highway Agency.