US Bridges

Hamlet Road over Hill Creek

Good

Clatsop County, Oregon · 056 MI SE of JCT HWY 53 · Structure no. 11221A130100556

Built
1989
36 years old
Condition
Good
inspected April 2023
Type
Slab
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
191
2020 count
Owner
County
County Highway Agency

About this bridge

Hamlet Road over Hill Creek is a prestressed concrete slab carrying Hamlet Road over Hill Creek in Clatsop County, Oregon. It was built in 1989, so it is 36 years old, younger 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 191 vehicles a day, roughly 20% of them trucks, projected to reach 221 by 2025. The structure is 28 ft (8.5 m) long and 24 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesHamlet Road
CrossesHill Creek
Location056 MI SE of JCT HWY 53
RouteCounty Highway C1301
StateOregon
Coordinates45.84309, -123.69209
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating37.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic191 (2020)
Projected traffic221 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hamlet Road over Hill Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Hamlet Road over Hill 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 April 2023.

How much traffic does Hamlet Road over Hill Creek carry?

About 191 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Hamlet Road over Hill Creek?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 24 ft wide.

Who owns Hamlet Road over Hill Creek?

It is owned by the County Highway Agency.