US Bridges

Low.Grave CR RD over Rock Creek

Fair

Josephine County, Oregon · T33S-R7W-S31JOSEPHINE CO · Structure no. 20636 130000931

Built
2006
19 years old
Condition
Fair
inspected October 2024
Type
Slab
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
146
2020 count
Owner
County
County Highway Agency

About this bridge

Low.Grave CR RD over Rock Creek is a prestressed concrete slab carrying Low.Grave CR RD over Rock Creek in Josephine County, Oregon. It was built in 2006, so it is 19 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 146 vehicles a day, projected to reach 171 by 2025. The structure is 63 ft (19.2 m) long and 24 ft wide. If it were closed, the detour would be 42.3 mi (68 km).

CarriesLow.Grave CR RD
CrossesRock Creek
LocationT33S-R7W-S31JOSEPHINE CO
RouteCounty Highway A3370
StateOregon
Coordinates42.6537, -123.5527
Functional classRural Minor Collector

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating64 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length63 ft (19.2 m)
Longest span63 ft (19.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic146 (2020)
Projected traffic171 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed42.3 mi (68 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 Low.Grave CR RD over Rock Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is Low.Grave CR RD over Rock 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 October 2024.

How much traffic does Low.Grave CR RD over Rock Creek carry?

About 146 vehicles per day (2020 count).

How long is Low.Grave CR RD over Rock Creek?

The structure is 63 ft (19.2 m) long with a longest span of 63 ft (19.2 m) and a deck 24 ft wide.

Who owns Low.Grave CR RD over Rock Creek?

It is owned by the County Highway Agency.