US Bridges

Hannegan RD over Ten Mile Creek

Good

Whatcom County, Washington · 0.2 N Ten Mile Road · Structure no. 089011000000000

Built
2018
7 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
11,198
2024 count
Owner
County
County Highway Agency

About this bridge

Hannegan RD over Ten Mile Creek is a prestressed concrete slab carrying Hannegan RD over Ten Mile Creek in Whatcom County, Washington. It was built in 2018, so it is 7 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.

It carries about 11,198 vehicles a day, roughly 4% of them trucks, projected to reach 13,500 by 2046. The structure is 64 ft (19.5 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesHannegan RD
CrossesTen Mile Creek
Location0.2 N Ten Mile Road
RouteCounty Highway 55110
Coordinates48.87333, -122.43833
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 rating102.8 US tons
Inventory rating60.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length64 ft (19.5 m)
Longest span60 ft (18.3 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,198 (2024)
Projected traffic13,500 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$2.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hannegan RD over Ten Mile Creek built?

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

What condition is Hannegan RD over Ten 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 October 2024.

How much traffic does Hannegan RD over Ten Mile Creek carry?

About 11,198 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Hannegan RD over Ten Mile Creek?

The structure is 64 ft (19.5 m) long with a longest span of 60 ft (18.3 m) and a deck 43 ft wide.

Who owns Hannegan RD over Ten Mile Creek?

It is owned by the County Highway Agency.