US Bridges

US 95 over Four Mile Creek

Good

Latah County, Idaho · 6.9 N. Moscow · Structure no. 000000000018521

Built
2018
7 years old
Condition
Good
inspected July 2021
Type
Tee Beam
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
6,600
2023 count
Owner
State
State Highway Agency

About this bridge

US 95 over Four Mile Creek is a prestressed concrete tee beam carrying US 95 over Four Mile Creek in Latah County, Idaho. It was built in 2018, so it is 7 years old, younger than the Idaho average of 45.3 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 6,600 vehicles a day, roughly 14% of them trucks, projected to reach 9,900 by 2042. The structure is 58 ft (17.7 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 95
CrossesFour Mile Creek
Location6.9 N. Moscow
RouteU.S. Route 95
StateIdaho
Coordinates46.83133, -117.03153
Functional classRural Principal Arterial - Other

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 inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating47.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length58 ft (17.7 m)
Longest span54 ft (16.5 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,600 (2023)
Projected traffic9,900 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 95 over Four Mile Creek built?

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

What condition is US 95 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 July 2021.

How much traffic does US 95 over Four Mile Creek carry?

About 6,600 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is US 95 over Four Mile Creek?

The structure is 58 ft (17.7 m) long with a longest span of 54 ft (16.5 m) and a deck 44 ft wide.

Who owns US 95 over Four Mile Creek?

It is owned by the State Highway Agency.