US Bridges

Hilltop RD over Ten Mile Creek

Fair

Coos County, Oregon · 0.8 MI East of HWY 101 · Structure no. 18028 007200100

Built
1997
28 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
160 ft
3 main spans
Daily traffic
81
2020 count
Owner
County
County Highway Agency

About this bridge

Hilltop RD over Ten Mile Creek is a prestressed concrete box beam or girders - multiple carrying Hilltop RD over Ten Mile Creek in Coos County, Oregon. It was built in 1997, so it is 28 years old, younger 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 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 81 vehicles a day, roughly 1% of them trucks, projected to reach 92 by 2025. The structure is 160 ft (48.8 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesHilltop RD
CrossesTen Mile Creek
Location0.8 MI East of HWY 101
RouteCounty Highway C0251
StateOregon
Coordinates43.57358, -124.17487
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating75.4 US tons
Inventory rating58.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span54 ft (16.5 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic81 (2020)
Projected traffic92 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Hilltop RD over Ten Mile Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Hilltop RD over Ten Mile 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 September 2024.

How much traffic does Hilltop RD over Ten Mile Creek carry?

About 81 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Hilltop RD over Ten Mile Creek?

The structure is 160 ft (48.8 m) long with a longest span of 54 ft (16.5 m) and a deck 32 ft wide.

Who owns Hilltop RD over Ten Mile Creek?

It is owned by the County Highway Agency.