US Bridges

Inch-Ktl Falls over Sherman Creek

Good

Ferry County, Washington · 00.1 S JCT SR 30 · Structure no. 083740000000000

Built
1958
67 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete
Length
44 ft
3 main spans
Daily traffic
867
2015 count
Owner
County
County Highway Agency

About this bridge

Inch-Ktl Falls over Sherman Creek is a concrete slab carrying Inch-Ktl Falls over Sherman Creek in Ferry County, Washington. It was built in 1958, so it is 67 years old, older 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 867 vehicles a day, roughly 20% of them trucks, projected to reach 1,200 by 2040. The structure is 44 ft (13.4 m) long and 26 ft wide. If it were closed, the detour would be 57.2 mi (92 km).

Location

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CarriesInch-Ktl Falls
CrossesSherman Creek
Location00.1 S JCT SR 30
RouteCounty Highway 30
CountyFerry County
StateWashington
Coordinates48.59114, -118.16676
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating26.8 US tons
Inventory rating20.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length44 ft (13.4 m)
Longest span30 ft (9.1 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic867 (2015)
Projected traffic1,200 by 2040
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed57.2 mi (92 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$1.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Inch-Ktl Falls over Sherman Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is Inch-Ktl Falls over Sherman Creek 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 June 2023.

How much traffic does Inch-Ktl Falls over Sherman Creek carry?

About 867 vehicles per day (2015 count), of which roughly 20% are trucks.

How long is Inch-Ktl Falls over Sherman Creek?

The structure is 44 ft (13.4 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.

Who owns Inch-Ktl Falls over Sherman Creek?

It is owned by the County Highway Agency.