US Bridges

Roberts Road over Latah Creek

GoodPosted for load

Spokane County, Washington · 0.1 Mile W. SR 27 · Structure no. 085929000000000

Built
1992
33 years old
Condition
Good
inspected July 2023
Type
Tee Beam
Prestressed Concrete Continuous
Length
200 ft
2 main spans
Daily traffic
41
2021 count
Owner
County
County Highway Agency

About this bridge

Roberts Road over Latah Creek is a prestressed concrete continuous tee beam carrying Roberts Road over Latah Creek in Spokane County, Washington. It was built in 1992, so it is 33 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 41 vehicles a day, roughly 37% of them trucks, projected to reach 59 by 2043. The structure is 200 ft (61 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesRoberts Road
CrossesLatah Creek
Location0.1 Mile W. SR 27
RouteCounty Highway 4180
Coordinates47.33543, -117.1942
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 protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating13.6 US tons
Inventory rating10.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckOther
Main spans2
Design loadHS 25 or greater
Structure length200 ft (61 m)
Longest span100 ft (30.5 m)
Deck width31 ft (9.4 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41 (2021)
Projected traffic59 by 2043
Trucks37%
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 proposedDeck replacement with only incidental widening
Estimated improvement cost$3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Roberts Road over Latah Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Roberts Road over Latah 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 2023.

How much traffic does Roberts Road over Latah Creek carry?

About 41 vehicles per day (2021 count), of which roughly 37% are trucks.

How long is Roberts Road over Latah Creek?

The structure is 200 ft (61 m) long with a longest span of 100 ft (30.5 m) and a deck 31 ft wide.

Who owns Roberts Road over Latah Creek?

It is owned by the County Highway Agency.