US Bridges

Stafney Lane over Senecal Creek

FairPosted for load

Marion County, Oregon · 010 MI W I-5 & HWY 214 J · Structure no. 47C34 510

Built
1965
60 years old
Condition
Fair
inspected August 2024
Type
Slab
Wood or Timber
Length
25 ft
1 main span
Daily traffic
110
2020 count
Owner
County
County Highway Agency

About this bridge

Stafney Lane over Senecal Creek is a wood or timber slab carrying Stafney Lane over Senecal Creek in Marion County, Oregon. It was built in 1965, so it is 60 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. Its operating status is: posted for load restriction.

It carries about 110 vehicles a day, roughly 2% of them trucks, projected to reach 123 by 2025. The structure is 25 ft (7.6 m) long and 22 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesStafney Lane
CrossesSenecal Creek
Location010 MI W I-5 & HWY 214 J
RouteCounty Highway C0510
StateOregon
Coordinates45.14794, -122.89771
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.5 US tons
Inventory rating20.4 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length25 ft (7.6 m)
Longest span22 ft (6.7 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2020)
Projected traffic123 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Stafney Lane over Senecal Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Stafney Lane over Senecal 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 August 2024.

How much traffic does Stafney Lane over Senecal Creek carry?

About 110 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Stafney Lane over Senecal Creek?

The structure is 25 ft (7.6 m) long with a longest span of 22 ft (6.7 m) and a deck 22 ft wide.

Who owns Stafney Lane over Senecal Creek?

It is owned by the County Highway Agency.