US Bridges

Tiller-Trail HWY over St.Johns Creek

Good

Douglas County, Oregon · 005 Mi. W. of Milo · Structure no. 19C526000101934

Built
1996
29 years old
Condition
Good
inspected June 2023
Type
Culvert
Steel
Length
23 ft
1 main span
Daily traffic
3,060
2020 count
Owner
County
County Highway Agency

About this bridge

Tiller-Trail HWY over St.Johns Creek is a steel culvert carrying Tiller-Trail HWY over St.Johns Creek in Douglas County, Oregon. It was built in 1996, so it is 29 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 3,060 vehicles a day, roughly 10% of them trucks, projected to reach 3,967 by 2025. The structure is 23 ft (7 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesTiller-Trail HWY
CrossesSt.Johns Creek
Location005 Mi. W. of Milo
RouteCounty Highway A0410
StateOregon
Coordinates42.92995, -123.05772
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.9 US tons
Inventory rating76.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,060 (2020)
Projected traffic3,967 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

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 St.Johns Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Tiller-Trail HWY over St.Johns 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 St.Johns Creek carry?

About 3,060 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Tiller-Trail HWY over St.Johns Creek?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m).

Who owns Tiller-Trail HWY over St.Johns Creek?

It is owned by the County Highway Agency.