US Bridges

SR 109 over Conner Creek

Good

Grays Harbor County, Washington · 0.8 N JCT SR 115 · Structure no. 0005054A0000000

Built
1955
70 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete Continuous
Length
151 ft
6 main spans
Daily traffic
2,754
2023 count
Owner
State
State Highway Agency

About this bridge

SR 109 over Conner Creek is a concrete continuous slab carrying SR 109 over Conner Creek in Grays Harbor County, Washington. It was built in 1955, so it is 70 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 2,754 vehicles a day, roughly 5% of them trucks, projected to reach 3,102 by 2039. The structure is 151 ft (46 m) long and 33 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesSR 109
CrossesConner Creek
Location0.8 N JCT SR 115
RouteState Highway 109
Coordinates47.05583, -124.16322
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.8 US tons
Inventory rating25.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 15
Structure length151 ft (46 m)
Longest span27 ft (8.2 m)
Deck width33 ft (10.1 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,754 (2023)
Projected traffic3,102 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 109 over Conner Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is SR 109 over Conner 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 August 2024.

How much traffic does SR 109 over Conner Creek carry?

About 2,754 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR 109 over Conner Creek?

The structure is 151 ft (46 m) long with a longest span of 27 ft (8.2 m) and a deck 33 ft wide.

Who owns SR 109 over Conner Creek?

It is owned by the State Highway Agency.