US Bridges

Dunkle Road over North Fork Rock Creek

Fair

Spokane County, Washington · 02.0 E Rockford · Structure no. 084702000000000

Built
1986
39 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Prestressed Concrete
Length
88 ft
1 main span
Daily traffic
29
2020 count
Owner
County
County Highway Agency

About this bridge

Dunkle Road over North Fork Rock Creek is a prestressed concrete tee beam carrying Dunkle Road over North Fork Rock Creek in Spokane County, Washington. It was built in 1986, so it is 39 years old, younger 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 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 29 vehicles a day, roughly 52% of them trucks, projected to reach 41 by 2042. The structure is 88 ft (26.8 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesDunkle Road
CrossesNorth Fork Rock Creek
Location02.0 E Rockford
RouteCounty Highway 913
CountySpokane County
StateWashington
Coordinates47.44408, -117.078
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating36.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length88 ft (26.8 m)
Longest span87 ft (26.5 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2020)
Projected traffic41 by 2042
Trucks52%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Dunkle Road over North Fork Rock Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Dunkle Road over North Fork Rock 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 2023.

How much traffic does Dunkle Road over North Fork Rock Creek carry?

About 29 vehicles per day (2020 count), of which roughly 52% are trucks.

How long is Dunkle Road over North Fork Rock Creek?

The structure is 88 ft (26.8 m) long with a longest span of 87 ft (26.5 m) and a deck 32 ft wide.

Who owns Dunkle Road over North Fork Rock Creek?

It is owned by the County Highway Agency.