US Bridges

Crescent Bar Road over Trinidad Springs

Fair

Grant County, Washington · 1.8S SR 28 · Structure no. 082377000000000

Built
1962
63 years old
Condition
Fair
inspected December 2023
Type
Channel Beam
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
1,422
2022 count
Owner
County
County Highway Agency

About this bridge

Crescent Bar Road over Trinidad Springs is a prestressed concrete channel beam carrying Crescent Bar Road over Trinidad Springs in Grant County, Washington. It was built in 1962, so it is 63 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,422 vehicles a day, roughly 15% of them trucks, projected to reach 1,984 by 2040. The structure is 29 ft (8.8 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesCrescent Bar Road
CrossesTrinidad Springs
Location1.8S SR 28
RouteCounty Highway 31790
CountyGrant County
StateWashington
Coordinates47.22472, -120.002
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating30.8 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length29 ft (8.8 m)
Longest span28 ft (8.5 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,422 (2022)
Projected traffic1,984 by 2040
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Crescent Bar Road over Trinidad Springs built?

It was built in 1962, making it 63 years old in 2025.

What condition is Crescent Bar Road over Trinidad Springs in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2023.

How much traffic does Crescent Bar Road over Trinidad Springs carry?

About 1,422 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Crescent Bar Road over Trinidad Springs?

The structure is 29 ft (8.8 m) long with a longest span of 28 ft (8.5 m) and a deck 28 ft wide.

Who owns Crescent Bar Road over Trinidad Springs?

It is owned by the County Highway Agency.