US Bridges

Or 34 (hwy 27) over Maltby Creek

Fair

Benton County, Oregon · 042 MI W Alsea Po · Structure no. 02965 027 03561

Built
1956
69 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
57 ft
4 main spans
Daily traffic
1,124
2022 count
Owner
State
State Highway Agency

About this bridge

Or 34 (hwy 27) over Maltby Creek is a wood or timber stringer/multi-beam or girder carrying Or 34 (hwy 27) over Maltby Creek in Benton County, Oregon. It was built in 1956, so it is 69 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 1,124 vehicles a day, roughly 16% of them trucks, projected to reach 1,200 by 2042. The structure is 57 ft (17.4 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesOr 34 (hwy 27)
CrossesMaltby Creek
Location042 MI W Alsea Po
RouteState Highway 34
StateOregon
Coordinates44.36665, -123.67038
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 alignment8: Equal to present desirable criteria
Operating rating30.8 US tons
Inventory rating23.6 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadH 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,124 (2022)
Projected traffic1,200 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Or 34 (hwy 27) over Maltby Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Or 34 (hwy 27) over Maltby 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 January 2024.

How much traffic does Or 34 (hwy 27) over Maltby Creek carry?

About 1,124 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is Or 34 (hwy 27) over Maltby Creek?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns Or 34 (hwy 27) over Maltby Creek?

It is owned by the State Highway Agency.