US Bridges

Henry Road over Mill Creek

GoodPosted for load

Stevens County, Washington · .09 E JCT Aladdin Rd. · Structure no. 082617000000000

Built
1974
51 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
28
2024 count
Owner
County
County Highway Agency

About this bridge

Henry Road over Mill Creek is a prestressed concrete stringer/multi-beam or girder carrying Henry Road over Mill Creek in Stevens 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. Its operating status is: posted for load restriction.

It carries about 28 vehicles a day, roughly 5% of them trucks, projected to reach 70 by 2037. The structure is 34 ft (10.4 m) long and 25 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesHenry Road
CrossesMill Creek
Location.09 E JCT Aladdin Rd.
RouteCounty Highway 46520
Coordinates48.60165, -117.80492
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating28.5 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span33 ft (10.1 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28 (2024)
Projected traffic70 by 2037
Trucks5%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Henry Road over Mill Creek built?

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

What condition is Henry Road over Mill 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 September 2024.

How much traffic does Henry Road over Mill Creek carry?

About 28 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Henry Road over Mill Creek?

The structure is 34 ft (10.4 m) long with a longest span of 33 ft (10.1 m) and a deck 25 ft wide.

Who owns Henry Road over Mill Creek?

It is owned by the County Highway Agency.