US Bridges

Three Mill Road over Mcmullin Creek

PoorPosted for load

Josephine County, Oregon · 6.3 MI NE / Cave Junction · Structure no. 20990 000 00000

Built
2002
23 years old
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
66 ft
1 main span
Daily traffic
30
2020 count
Owner
Local
Other Local Agency

About this bridge

Three Mill Road over Mcmullin Creek is a steel stringer/multi-beam or girder carrying Three Mill Road over Mcmullin Creek in Josephine County, Oregon. It was built in 2002, so it is 23 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 30 vehicles a day, roughly 1% of them trucks, projected to reach 35 by 2025. The structure is 66 ft (20.1 m) long and 13 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesThree Mill Road
CrossesMcmullin Creek
Location6.3 MI NE / Cave Junction
RouteState Lands Road 0
StateOregon
Coordinates42.23648, -123.56617
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating12.5 US tons
Inventory rating9.6 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadHS 20
Structure length66 ft (20.1 m)
Longest span52 ft (15.8 m)
Deck width13 ft (4.1 m)
Roadway width11 ft (3.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2020)
Projected traffic35 by 2025
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$345,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Three Mill Road over Mcmullin Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is Three Mill Road over Mcmullin Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does Three Mill Road over Mcmullin Creek carry?

About 30 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Three Mill Road over Mcmullin Creek?

The structure is 66 ft (20.1 m) long with a longest span of 52 ft (15.8 m) and a deck 13 ft wide.

Who owns Three Mill Road over Mcmullin Creek?

It is owned by the Other Local Agency.