US Bridges

Tiller-Trail HWY over Coffee Creek

Good

Douglas County, Oregon · 20.0 MI E of Canyonville · Structure no. 19C476 1 2348

Built
1989
36 years old
Condition
Good
inspected June 2023
Type
Tee Beam
Prestressed Concrete
Length
182 ft
2 main spans
Daily traffic
2,467
2020 count
Owner
County
County Highway Agency

About this bridge

Tiller-Trail HWY over Coffee Creek is a prestressed concrete tee beam carrying Tiller-Trail HWY over Coffee Creek in Douglas 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 2,467 vehicles a day, roughly 10% of them trucks, projected to reach 2,792 by 2025. The structure is 182 ft (55.5 m) long and 39 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

CarriesTiller-Trail HWY
CrossesCoffee Creek
Location20.0 MI E of Canyonville
RouteCounty Highway A0410
StateOregon
Coordinates42.93988, -123.00092
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than 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 rating86 US tons
Inventory rating52 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length182 ft (55.5 m)
Longest span100 ft (30.5 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,467 (2020)
Projected traffic2,792 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 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 Tiller-Trail HWY over Coffee Creek built?

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

What condition is Tiller-Trail HWY over Coffee 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 June 2023.

How much traffic does Tiller-Trail HWY over Coffee Creek carry?

About 2,467 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Tiller-Trail HWY over Coffee Creek?

The structure is 182 ft (55.5 m) long with a longest span of 100 ft (30.5 m) and a deck 39 ft wide.

Who owns Tiller-Trail HWY over Coffee Creek?

It is owned by the County Highway Agency.