US Bridges

China Hat Road over Arnold Canal

Fair

Deschutes County, Oregon · 00.60 MI East HWY 97 · Structure no. 17C52 252 00060

Built
1978
47 years old
Condition
Fair
inspected March 2024
Type
Slab
Prestressed Concrete
Length
27 ft
1 main span
Daily traffic
2,251
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

China Hat Road over Arnold Canal is a prestressed concrete slab carrying China Hat Road over Arnold Canal in Deschutes County, Oregon. It was built in 1978, so it is 47 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 2,251 vehicles a day, roughly 7% of them trucks, projected to reach 2,396 by 2025. The structure is 27 ft (8.2 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesChina Hat Road
CrossesArnold Canal
Location00.60 MI East HWY 97
RouteCounty Highway 3388
StateOregon
Coordinates44.00045, -121.31387
Functional classUrban 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 protection8 Very GoodNo problems noted.
Last inspectionMarch 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 rating59.3 US tons
Inventory rating45.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,251 (2020)
Projected traffic2,396 by 2025
Trucks7%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 China Hat Road over Arnold Canal built?

It was built in 1978, making it 47 years old in 2025.

What condition is China Hat Road over Arnold Canal 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 March 2024.

How much traffic does China Hat Road over Arnold Canal carry?

About 2,251 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is China Hat Road over Arnold Canal?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 36 ft wide.

Who owns China Hat Road over Arnold Canal?

It is owned by the City or Municipal Highway Agency.