US Bridges

IRR BIA RTE 2 over Mill Creek

Fair

Wasco County, Oregon · At Old Mill Camp · Structure no. 00000000000P923

Built
1965
60 years old
Condition
Fair
inspected June 2023
Type
Slab
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
10
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 2 over Mill Creek is a prestressed concrete slab carrying IRR BIA RTE 2 over Mill Creek in Wasco County, Oregon. It was built in 1965, so it is 60 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.

It carries about 10 vehicles a day, roughly 10% of them trucks, projected to reach 20 by 2043. The structure is 40 ft (12.2 m) long and 17 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesIRR BIA RTE 2
CrossesMill Creek
LocationAt Old Mill Camp
RouteFederal Lands Road 2
StateOregon
Coordinates44.87436, -121.55434
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.9 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width17 ft (5.2 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic20 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IRR BIA RTE 2 over Mill Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is IRR BIA RTE 2 over Mill 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 IRR BIA RTE 2 over Mill Creek carry?

About 10 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is IRR BIA RTE 2 over Mill Creek?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 17 ft wide.

Who owns IRR BIA RTE 2 over Mill Creek?

It is owned by the Bureau of Indian Affairs.