US Bridges

Ross Lane over Ross Lane

Fair

Jackson County, Oregon · 0.91 Milepost · Structure no. 29C282746 00091

Built
1974
51 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
602
2020 count
Owner
County
County Highway Agency

About this bridge

Ross Lane over Ross Lane is a prestressed concrete slab carrying Ross Lane over Ross Lane in Jackson County, Oregon. It was built in 1974, so it is 51 years old, older 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 602 vehicles a day, roughly 10% of them trucks, projected to reach 701 by 2025. The structure is 30 ft (9.1 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRoss Lane
CrossesRoss Lane
Location0.91 Milepost
RouteCounty Highway C0746
CountyJackson County
StateOregon
Coordinates42.34433, -122.92439
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to 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 rating84 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic602 (2020)
Projected traffic701 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Ross Lane over Ross Lane built?

It was built in 1974, making it 51 years old in 2025.

What condition is Ross Lane over Ross Lane 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 2023.

How much traffic does Ross Lane over Ross Lane carry?

About 602 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Ross Lane over Ross Lane?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 31 ft wide.

Who owns Ross Lane over Ross Lane?

It is owned by the County Highway Agency.