US Bridges

Mountaindale Road over Bledsoe Creek

Fair

Washington County, Oregon · 009 MI N HWY 26 · Structure no. 671360A68400430

Built
1992
33 years old
Condition
Fair
inspected July 2024
Type
Slab
Wood or Timber
Length
26 ft
1 main span
Daily traffic
530
2020 count
Owner
County
County Highway Agency

About this bridge

Mountaindale Road over Bledsoe Creek is a wood or timber slab carrying Mountaindale Road over Bledsoe Creek in Washington County, Oregon. It was built in 1992, so it is 33 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 530 vehicles a day, roughly 10% of them trucks, projected to reach 600 by 2025. The structure is 26 ft (7.9 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMountaindale Road
CrossesBledsoe Creek
Location009 MI N HWY 26
RouteCounty Highway C0097
StateOregon
Coordinates45.62082, -123.04421
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating37.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span21 ft (6.4 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic530 (2020)
Projected traffic600 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mountaindale Road over Bledsoe Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Mountaindale Road over Bledsoe 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 July 2024.

How much traffic does Mountaindale Road over Bledsoe Creek carry?

About 530 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Mountaindale Road over Bledsoe Creek?

The structure is 26 ft (7.9 m) long with a longest span of 21 ft (6.4 m) and a deck 28 ft wide.

Who owns Mountaindale Road over Bledsoe Creek?

It is owned by the County Highway Agency.