US Bridges

Elk Creek Road over Alder Creek

FairPosted for load

Jackson County, Oregon · 15.16 Milepost · Structure no. 29C231941 01486

Built
1962
63 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
41 ft
1 main span
Daily traffic
51
2020 count
Owner
County
County Highway Agency

About this bridge

Elk Creek Road over Alder Creek is a wood or timber stringer/multi-beam or girder carrying Elk Creek Road over Alder Creek in Jackson County, Oregon. It was built in 1962, so it is 63 years old, older 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. Its operating status is: posted for other load-capacity restriction.

It carries about 51 vehicles a day, roughly 10% of them trucks, projected to reach 60 by 2025. The structure is 41 ft (12.5 m) long and 22 ft wide.

Location

Open in Google Maps
CarriesElk Creek Road
CrossesAlder Creek
Location15.16 Milepost
RouteCounty Highway C0941
CountyJackson County
StateOregon
Coordinates42.78021, -122.60579
Functional classRural Local

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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating28.2 US tons
Inventory rating21.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span39 ft (11.9 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2020)
Projected traffic60 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$210,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Elk Creek Road over Alder Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is Elk Creek Road over Alder 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 June 2023.

How much traffic does Elk Creek Road over Alder Creek carry?

About 51 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Elk Creek Road over Alder Creek?

The structure is 41 ft (12.5 m) long with a longest span of 39 ft (11.9 m) and a deck 22 ft wide.

Who owns Elk Creek Road over Alder Creek?

It is owned by the County Highway Agency.