US Bridges

MCINTOSH/5270 over Four Mile Creek

Good

Whitman County, Washington · 0.45 MI SW Parvin · Structure no. 083326000000000

Built
1974
51 years old
Condition
Good
inspected December 2024
Type
Tee Beam
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
34
2020 count
Owner
County
County Highway Agency

About this bridge

MCINTOSH/5270 over Four Mile Creek is a prestressed concrete tee beam carrying MCINTOSH/5270 over Four Mile Creek in Whitman County, Washington. It was built in 1974, so it is 51 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 34 vehicles a day, roughly 25% of them trucks, projected to reach 35 by 2039. The structure is 38 ft (11.6 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesMCINTOSH/5270
CrossesFour Mile Creek
Location0.45 MI SW Parvin
RouteCounty Highway 52700
Coordinates46.83842, -117.2203
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34.3 US tons
Inventory rating13.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span37 ft (11.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34 (2020)
Projected traffic35 by 2039
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$1.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was MCINTOSH/5270 over Four Mile Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is MCINTOSH/5270 over Four Mile 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 December 2024.

How much traffic does MCINTOSH/5270 over Four Mile Creek carry?

About 34 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is MCINTOSH/5270 over Four Mile Creek?

The structure is 38 ft (11.6 m) long with a longest span of 37 ft (11.3 m) and a deck 24 ft wide.

Who owns MCINTOSH/5270 over Four Mile Creek?

It is owned by the County Highway Agency.