US Bridges

US 30 (hwy 92) over Mill Creek

Good

Clatsop County, Oregon · 004 MI E Astoria · Structure no. 21357 02W 09469

Built
2014
11 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
120 ft
1 main span
Daily traffic
12,211
2022 count
Owner
State
State Highway Agency

About this bridge

US 30 (hwy 92) over Mill Creek is a steel stringer/multi-beam or girder carrying US 30 (hwy 92) over Mill Creek in Clatsop County, Oregon. It was built in 2014, so it is 11 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,211 vehicles a day, roughly 17% of them trucks, projected to reach 13,900 by 2042. The structure is 120 ft (36.6 m) long and 43 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesUS 30 (hwy 92)
CrossesMill Creek
Location004 MI E Astoria
RouteU.S. Route 30
CountyClatsop County
StateOregon
Coordinates46.19246, -123.76099
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
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 rating61.4 US tons
Inventory rating47.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span120 ft (36.6 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,211 (2022)
Projected traffic13,900 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 km)
TollOn a free road
National Highway SystemYes

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 Mill Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is US 30 (hwy 92) over Mill Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

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

About 12,211 vehicles per day (2022 count), of which roughly 17% are trucks.

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

The structure is 120 ft (36.6 m) long with a longest span of 120 ft (36.6 m) and a deck 43 ft wide.

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

It is owned by the State Highway Agency.