US Bridges

US 30 (hwy 92) over Mcnulty Creek

Fair

Columbia County, Oregon · 0.5 MI SE ST Helens · Structure no. 17435 02W 02753

Built
1996
29 years old
Condition
Fair
inspected November 2023
Type
Slab
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
23,995
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 (hwy 92) over Mcnulty Creek is a prestressed concrete slab carrying US 30 (hwy 92) over Mcnulty Creek in Columbia County, Oregon. It was built in 1996, so it is 29 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 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 23,995 vehicles a day, roughly 5% of them trucks, projected to reach 28,000 by 2042. The structure is 34 ft (10.4 m) long and 87 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 30 (hwy 92)
CrossesMcnulty Creek
Location0.5 MI SE ST Helens
RouteU.S. Route 30
CountyColumbia County
StateOregon
Coordinates45.84671, -122.83319
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating46.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length34 ft (10.4 m)
Longest span34 ft (10.4 m)
Deck width87 ft (26.5 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,995 (2022)
Projected traffic28,000 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 US 30 (hwy 92) over Mcnulty Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is US 30 (hwy 92) over Mcnulty 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 November 2023.

How much traffic does US 30 (hwy 92) over Mcnulty Creek carry?

About 23,995 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is US 30 (hwy 92) over Mcnulty Creek?

The structure is 34 ft (10.4 m) long with a longest span of 34 ft (10.4 m) and a deck 87 ft wide.

Who owns US 30 (hwy 92) over Mcnulty Creek?

It is owned by the State Highway Agency.