US Bridges

Mountain Ave over Bear Creek

Fair

Jackson County, Oregon · Mountain Ave at Bear CR · Structure no. 29CY4 FAU 00270

Built
1967
58 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
102 ft
2 main spans
Daily traffic
2,633
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mountain Ave over Bear Creek is a prestressed concrete slab carrying Mountain Ave over Bear Creek in Jackson County, Oregon. It was built in 1967, so it is 58 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 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 2,633 vehicles a day, roughly 10% of them trucks, projected to reach 3,088 by 2025. The structure is 102 ft (31.1 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMountain Ave
CrossesBear Creek
LocationMountain Ave at Bear CR
RouteCity Street 3875
CountyJackson County
StateOregon
Coordinates42.20484, -122.70098
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span50 ft (15.2 m)
Deck width36 ft (11 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,633 (2020)
Projected traffic3,088 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Mountain Ave over Bear Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Mountain Ave over Bear Creek 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 Mountain Ave over Bear Creek carry?

About 2,633 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Mountain Ave over Bear Creek?

The structure is 102 ft (31.1 m) long with a longest span of 50 ft (15.2 m) and a deck 36 ft wide.

Who owns Mountain Ave over Bear Creek?

It is owned by the City or Municipal Highway Agency.