US Bridges

North Lommen Road over Port of Tillamook Bay RR

Good

Tillamook County, Oregon · .7 MI SE HWY 53/FOSS RD · Structure no. 57C15 511 00010

Built
1965
60 years old, rebuilt 2015
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
64 ft
1 main span
Daily traffic
17
2020 count
Owner
County
County Highway Agency

About this bridge

North Lommen Road over Port of Tillamook Bay RR is a steel stringer/multi-beam or girder carrying North Lommen Road over Port of Tillamook Bay RR in Tillamook County, Oregon. It was built in 1965 and reconstructed in 2015, so it is 60 years old, older than the Oregon average of 49.9 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 17 vehicles a day, projected to reach 22 by 2025. The structure is 64 ft (19.5 m) long and 12 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNorth Lommen Road
CrossesPort of Tillamook Bay RR
Location.7 MI SE HWY 53/FOSS RD
RouteCounty Highway C0511
CountyTillamook County
StateOregon
Coordinates45.70282, -123.84855
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length64 ft (19.5 m)
Longest span63 ft (19.2 m)
Deck width12 ft (3.7 m)
Roadway width10 ft (3.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17 (2020)
Projected traffic22 by 2025
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was North Lommen Road over Port of Tillamook Bay RR built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2015.

What condition is North Lommen Road over Port of Tillamook Bay RR 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 June 2023.

How much traffic does North Lommen Road over Port of Tillamook Bay RR carry?

About 17 vehicles per day (2020 count).

How long is North Lommen Road over Port of Tillamook Bay RR?

The structure is 64 ft (19.5 m) long with a longest span of 63 ft (19.2 m) and a deck 12 ft wide.

Who owns North Lommen Road over Port of Tillamook Bay RR?

It is owned by the County Highway Agency.