US Bridges

Alderwood DR over Jones Creek

Fair

Lane County, Oregon · 005 MI No Low Pass Waysde · Structure no. 39C367363200005

Built
1983
42 years old
Condition
Fair
inspected October 2024
Type
Slab
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
49
2020 count
Owner
County
County Highway Agency

About this bridge

Alderwood DR over Jones Creek is a prestressed concrete slab carrying Alderwood DR over Jones Creek in Lane County, Oregon. It was built in 1983, so it is 42 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 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 49 vehicles a day, projected to reach 59 by 2025. The structure is 34 ft (10.4 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesAlderwood DR
CrossesJones Creek
Location005 MI No Low Pass Waysde
RouteCounty Highway 1C363
StateOregon
Coordinates44.15914, -123.42144
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating46 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span33 ft (10.1 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49 (2020)
Projected traffic59 by 2025
Trucks0%
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 Alderwood DR over Jones Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Alderwood DR over Jones 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 October 2024.

How much traffic does Alderwood DR over Jones Creek carry?

About 49 vehicles per day (2020 count).

How long is Alderwood DR over Jones Creek?

The structure is 34 ft (10.4 m) long with a longest span of 33 ft (10.1 m) and a deck 24 ft wide.

Who owns Alderwood DR over Jones Creek?

It is owned by the County Highway Agency.