US Bridges

Stoltz Hill RD over Oak Creek

Poor

Linn County, Oregon · 014 MI S CR 707 · Structure no. 73913 073900137

Built
1966
59 years old
Condition
Poor
inspected June 2024
Type
Slab
Prestressed Concrete
Length
21 ft
1 main span
Daily traffic
1,442
2021 count
Owner
County
County Highway Agency

About this bridge

Stoltz Hill RD over Oak Creek is a prestressed concrete slab carrying Stoltz Hill RD over Oak Creek in Linn County, Oregon. It was built in 1966, so it is 59 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,442 vehicles a day, roughly 15% of them trucks, projected to reach 1,854 by 2041. The structure is 21 ft (6.4 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesStoltz Hill RD
CrossesOak Creek
Location014 MI S CR 707
RouteCounty Highway C0739
StateOregon
Coordinates44.50847, -122.92992
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,442 (2021)
Projected traffic1,854 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed5 mi (8 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 Stoltz Hill RD over Oak Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is Stoltz Hill RD over Oak Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does Stoltz Hill RD over Oak Creek carry?

About 1,442 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Stoltz Hill RD over Oak Creek?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 32 ft wide.

Who owns Stoltz Hill RD over Oak Creek?

It is owned by the County Highway Agency.