US Bridges

Capitol ST NE over Mill Creek

Good

Marion County, Oregon · 0025 N Capital Bldg · Structure no. 20866 000 00000

Built
2009
16 years old
Condition
Good
inspected August 2023
Type
Slab
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
22,876
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Capitol ST NE over Mill Creek is a prestressed concrete slab carrying Capitol ST NE over Mill Creek in Marion County, Oregon. It was built in 2009, so it is 16 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 22,876 vehicles a day, roughly 5% of them trucks, projected to reach 31,924 by 2025. The structure is 64 ft (19.5 m) long and 73 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCapitol ST NE
CrossesMill Creek
Location0025 N Capital Bldg
RouteCity Street C0000
StateOregon
Coordinates44.94397, -123.02582
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.2 US tons
Inventory rating72.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length64 ft (19.5 m)
Longest span64 ft (19.5 m)
Deck width73 ft (22.1 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,876 (2020)
Projected traffic31,924 by 2025
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Capitol ST NE over Mill Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is Capitol ST NE 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 August 2023.

How much traffic does Capitol ST NE over Mill Creek carry?

About 22,876 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Capitol ST NE over Mill Creek?

The structure is 64 ft (19.5 m) long with a longest span of 64 ft (19.5 m) and a deck 73 ft wide.

Who owns Capitol ST NE over Mill Creek?

It is owned by the City or Municipal Highway Agency.