US Bridges

HUNTLEY/6220 over Frog Creek

Good

Whitman County, Washington · 4.52 MI SW Endicott · Structure no. 089013000000000

Built
2018
7 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
3
2020 count
Owner
County
County Highway Agency

About this bridge

HUNTLEY/6220 over Frog Creek is a prestressed concrete slab carrying HUNTLEY/6220 over Frog Creek in Whitman County, Washington. It was built in 2018, so it is 7 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3 vehicles a day, roughly 25% of them trucks, projected to reach 4 by 2039. The structure is 30 ft (9.1 m) long and 28 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesHUNTLEY/6220
CrossesFrog Creek
Location4.52 MI SW Endicott
RouteCounty Highway 62200
Coordinates46.85837, -117.52907
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3 (2020)
Projected traffic4 by 2039
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$513,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HUNTLEY/6220 over Frog Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is HUNTLEY/6220 over Frog 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 October 2024.

How much traffic does HUNTLEY/6220 over Frog Creek carry?

About 3 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is HUNTLEY/6220 over Frog Creek?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 28 ft wide.

Who owns HUNTLEY/6220 over Frog Creek?

It is owned by the County Highway Agency.