US Bridges

Old Monitor Road over Wenatchee River

Fair

Chelan County, Washington · 00.07W SR 97 · Structure no. 081736000000000

Built
1930
95 years old
Condition
Fair
inspected August 2023
Type
Arch - Deck
Concrete Continuous
Length
357 ft
3 main spans
Daily traffic
1,857
2020 count
Owner
County
County Highway Agency

About this bridge

Old Monitor Road over Wenatchee River is a concrete continuous arch - deck carrying Old Monitor Road over Wenatchee River in Chelan County, Washington. It was built in 1930, so it is 95 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 1,857 vehicles a day, roughly 4% of them trucks, projected to reach 2,385 by 2040. The structure is 357 ft (108.8 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesOld Monitor Road
CrossesWenatchee River
Location00.07W SR 97
RouteCounty Highway 94200
CountyChelan County
StateWashington
Coordinates47.48708, -120.41489
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.2 US tons
Inventory rating24.7 US tons

Structure

Structure typeArch - Deck
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadH 15
Structure length357 ft (108.8 m)
Longest span131 ft (39.9 m)
Deck width31 ft (9.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,857 (2020)
Projected traffic2,385 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$13.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Monitor Road over Wenatchee River built?

It was built in 1930, making it 95 years old in 2025.

What condition is Old Monitor Road over Wenatchee River 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 August 2023.

How much traffic does Old Monitor Road over Wenatchee River carry?

About 1,857 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Old Monitor Road over Wenatchee River?

The structure is 357 ft (108.8 m) long with a longest span of 131 ft (39.9 m) and a deck 31 ft wide.

Who owns Old Monitor Road over Wenatchee River?

It is owned by the County Highway Agency.