US Bridges

Hess RD over Smallman Creek

Fair

Linn County, Oregon · 007 MI N CR 5 · Structure no. 14009 615 00071

Built
1964
61 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
134
2021 count
Owner
County
County Highway Agency

About this bridge

Hess RD over Smallman Creek is a prestressed concrete slab carrying Hess RD over Smallman Creek in Linn County, Oregon. It was built in 1964, so it is 61 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.

It carries about 134 vehicles a day, roughly 5% of them trucks, projected to reach 206 by 2041. The structure is 31 ft (9.4 m) long and 22 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesHess RD
CrossesSmallman Creek
Location007 MI N CR 5
RouteCounty Highway C0615
StateOregon
Coordinates44.74865, -122.86607
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
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 rating30 US tons
Inventory rating23.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic134 (2021)
Projected traffic206 by 2041
Trucks5%
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 Hess RD over Smallman Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Hess RD over Smallman 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 July 2023.

How much traffic does Hess RD over Smallman Creek carry?

About 134 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Hess RD over Smallman Creek?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 22 ft wide.

Who owns Hess RD over Smallman Creek?

It is owned by the County Highway Agency.