US Bridges

Cinebar Road over Mill Cr.

Good

Lewis County, Washington · 1.33 S Sr. 508 · Structure no. 083642000000000

Built
1975
50 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete Continuous
Length
40 ft
2 main spans
Daily traffic
482
2021 count
Owner
County
County Highway Agency

About this bridge

Cinebar Road over Mill Cr. is a concrete continuous slab carrying Cinebar Road over Mill Cr. in Lewis County, Washington. It was built in 1975, so it is 50 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 482 vehicles a day, roughly 28% of them trucks, projected to reach 871 by 2041. The structure is 40 ft (12.2 m) long and 34 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

CarriesCinebar Road
CrossesMill Cr.
Location1.33 S Sr. 508
RouteCounty Highway 96004
Coordinates46.58803, -122.55231
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span19 ft (5.7 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic482 (2021)
Projected traffic871 by 2041
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$684,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cinebar Road over Mill Cr. built?

It was built in 1975, making it 50 years old in 2025.

What condition is Cinebar Road over Mill Cr. 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 January 2024.

How much traffic does Cinebar Road over Mill Cr. carry?

About 482 vehicles per day (2021 count), of which roughly 28% are trucks.

How long is Cinebar Road over Mill Cr.?

The structure is 40 ft (12.2 m) long with a longest span of 19 ft (5.7 m) and a deck 34 ft wide.

Who owns Cinebar Road over Mill Cr.?

It is owned by the County Highway Agency.