US Bridges

Or 99 (hwy 486) over I-5 (hwy 001)

Fair

Jackson County, Oregon · 03.3 MI S HWY 060 JCT · Structure no. 07601B271Y00307

Built
1953
72 years old, rebuilt 1972
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
192 ft
4 main spans
Daily traffic
6,174
2022 count
Owner
State
State Highway Agency

About this bridge

Or 99 (hwy 486) over I-5 (hwy 001) is a concrete continuous tee beam carrying Or 99 (hwy 486) over I-5 (hwy 001) in Jackson County, Oregon. It was built in 1953 and reconstructed in 1972, so it is 72 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 6,174 vehicles a day, roughly 10% of them trucks, projected to reach 6,300 by 2042. The structure is 192 ft (58.5 m) long and 39 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesOr 99 (hwy 486)
CrossesI-5 (hwy 001)
Location03.3 MI S HWY 060 JCT
RouteState Highway 99
CountyJackson County
StateOregon
Coordinates42.42601, -123.04235
Functional classRural Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.2 US tons
Inventory rating13.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length192 ft (58.5 m)
Longest span56 ft (17.1 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,174 (2022)
Projected traffic6,300 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Or 99 (hwy 486) over I-5 (hwy 001) built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1972.

What condition is Or 99 (hwy 486) over I-5 (hwy 001) 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 Or 99 (hwy 486) over I-5 (hwy 001) carry?

About 6,174 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Or 99 (hwy 486) over I-5 (hwy 001)?

The structure is 192 ft (58.5 m) long with a longest span of 56 ft (17.1 m) and a deck 39 ft wide.

Who owns Or 99 (hwy 486) over I-5 (hwy 001)?

It is owned by the State Highway Agency.