US Bridges

Northeast 12th Ave over Lake Lytle

Fair

Tillamook County, Oregon · 12th ST N End Lake Lytle · Structure no. 57C18 586 00020

Built
1973
52 years old
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
647
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Northeast 12th Ave over Lake Lytle is a prestressed concrete slab carrying Northeast 12th Ave over Lake Lytle in Tillamook County, Oregon. It was built in 1973, so it is 52 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 647 vehicles a day, roughly 10% of them trucks, projected to reach 752 by 2025. The structure is 31 ft (9.4 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesNortheast 12th Ave
CrossesLake Lytle
Location12th ST N End Lake Lytle
RouteCity Street 0
CountyTillamook County
StateOregon
Coordinates45.62757, -123.93898
Functional classUrban Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating63.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span26 ft (7.9 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic647 (2020)
Projected traffic752 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Northeast 12th Ave over Lake Lytle built?

It was built in 1973, making it 52 years old in 2025.

What condition is Northeast 12th Ave over Lake Lytle 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 August 2024.

How much traffic does Northeast 12th Ave over Lake Lytle carry?

About 647 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Northeast 12th Ave over Lake Lytle?

The structure is 31 ft (9.4 m) long with a longest span of 26 ft (7.9 m) and a deck 28 ft wide.

Who owns Northeast 12th Ave over Lake Lytle?

It is owned by the City or Municipal Highway Agency.