US Bridges

Burma RD over Methow River

Good

Okanogan County, Washington · 0.1 Mi.E. JCT SR153 · Structure no. 085744000000000

Built
1990
35 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
212 ft
2 main spans
Daily traffic
27
2022 count
Owner
County
County Highway Agency

About this bridge

Burma RD over Methow River is a prestressed concrete stringer/multi-beam or girder carrying Burma RD over Methow River in Okanogan County, Washington. It was built in 1990, so it is 35 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 27 vehicles a day, roughly 15% of them trucks, projected to reach 54 by 2042. The structure is 212 ft (64.6 m) long and 25 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesBurma RD
CrossesMethow River
Location0.1 Mi.E. JCT SR153
RouteCounty Highway 15350
Coordinates48.1006, -120.02082
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating22.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length212 ft (64.6 m)
Longest span105 ft (31.9 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27 (2022)
Projected traffic54 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Burma RD over Methow River built?

It was built in 1990, making it 35 years old in 2025.

What condition is Burma RD over Methow River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Burma RD over Methow River carry?

About 27 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Burma RD over Methow River?

The structure is 212 ft (64.6 m) long with a longest span of 105 ft (31.9 m) and a deck 25 ft wide.

Who owns Burma RD over Methow River?

It is owned by the County Highway Agency.