US Bridges

Illahee Road over Steele Creek

Fair

Kitsap County, Washington · 0.05 S JCT Brownsville Hw · Structure no. 081555000000000

Built
1986
39 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
104 ft
1 main span
Daily traffic
2,601
2023 count
Owner
County
County Highway Agency

About this bridge

Illahee Road over Steele Creek is a prestressed concrete tee beam carrying Illahee Road over Steele Creek in Kitsap County, Washington. It was built in 1986, so it is 39 years old, younger 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 2,601 vehicles a day, roughly 10% of them trucks, projected to reach 2,861 by 2043. The structure is 104 ft (31.7 m) long and 41 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesIllahee Road
CrossesSteele Creek
Location0.05 S JCT Brownsville Hw
RouteCounty Highway 50915
CountyKitsap County
StateWashington
Coordinates47.65086, -122.61855
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 rating74.6 US tons
Inventory rating44.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length104 ft (31.7 m)
Longest span98 ft (29.9 m)
Deck width41 ft (12.6 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,601 (2023)
Projected traffic2,861 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.8 mi (11 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$1.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Illahee Road over Steele Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Illahee Road over Steele Creek 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 July 2024.

How much traffic does Illahee Road over Steele Creek carry?

About 2,601 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Illahee Road over Steele Creek?

The structure is 104 ft (31.7 m) long with a longest span of 98 ft (29.9 m) and a deck 41 ft wide.

Who owns Illahee Road over Steele Creek?

It is owned by the County Highway Agency.