US Bridges

Graves Road over Milk Creek

Good

Clackamas County, Oregon · 0.7 MI E of HWY 213 · Structure no. 19749 000 00070

Built
2005
20 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
144 ft
1 main span
Daily traffic
520
2020 count
Owner
County
County Highway Agency

About this bridge

Graves Road over Milk Creek is a prestressed concrete stringer/multi-beam or girder carrying Graves Road over Milk Creek in Clackamas County, Oregon. It was built in 2005, so it is 20 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 520 vehicles a day, roughly 11% of them trucks, projected to reach 520 by 2025. The structure is 144 ft (44 m) long and 34 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesGraves Road
CrossesMilk Creek
Location0.7 MI E of HWY 213
RouteCounty Highway C0166
StateOregon
Coordinates45.22396, -122.56702
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length144 ft (44 m)
Longest span144 ft (44 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic520 (2020)
Projected traffic520 by 2025
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Graves Road over Milk Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Graves Road over Milk 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 April 2023.

How much traffic does Graves Road over Milk Creek carry?

About 520 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is Graves Road over Milk Creek?

The structure is 144 ft (44 m) long with a longest span of 144 ft (44 m) and a deck 34 ft wide.

Who owns Graves Road over Milk Creek?

It is owned by the County Highway Agency.