US Bridges

Crossroad Lane W over Curtis Slough

Fair

Lane County, Oregon · 050 MI NW Coburg · Structure no. 39C147165000009

Built
1978
47 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
136 ft
5 main spans
Daily traffic
184
2020 count
Owner
County
County Highway Agency

About this bridge

Crossroad Lane W over Curtis Slough is a prestressed concrete slab carrying Crossroad Lane W over Curtis Slough in Lane County, Oregon. It was built in 1978, so it is 47 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 5 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 184 vehicles a day, roughly 5% of them trucks, projected to reach 210 by 2025. The structure is 136 ft (41.5 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCrossroad Lane W
CrossesCurtis Slough
Location050 MI NW Coburg
RouteCounty Highway C1650
CountyLane County
StateOregon
Coordinates44.18901, -123.12413
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating63.1 US tons
Inventory rating38 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans5
Design loadHS 20
Structure length136 ft (41.5 m)
Longest span28 ft (8.5 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic184 (2020)
Projected traffic210 by 2025
Trucks5%
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 Crossroad Lane W over Curtis Slough built?

It was built in 1978, making it 47 years old in 2025.

What condition is Crossroad Lane W over Curtis Slough 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 July 2024.

How much traffic does Crossroad Lane W over Curtis Slough carry?

About 184 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Crossroad Lane W over Curtis Slough?

The structure is 136 ft (41.5 m) long with a longest span of 28 ft (8.5 m) and a deck 28 ft wide.

Who owns Crossroad Lane W over Curtis Slough?

It is owned by the County Highway Agency.