US Bridges

Cedar Flats RD over Munger Creek

Fair

Josephine County, Oregon · Josephine CO · Structure no. 33C22 411000200

Built
1972
53 years old
Condition
Fair
inspected October 2024
Type
Slab
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
966
2020 count
Owner
County
County Highway Agency

About this bridge

Cedar Flats RD over Munger Creek is a prestressed concrete slab carrying Cedar Flats RD over Munger Creek in Josephine County, Oregon. It was built in 1972, so it is 53 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 966 vehicles a day, roughly 10% of them trucks, projected to reach 1,136 by 2025. The structure is 51 ft (15.5 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCedar Flats RD
CrossesMunger Creek
LocationJosephine CO
RouteCounty Highway A3220
StateOregon
Coordinates42.20582, -123.30366
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.4 US tons
Inventory rating66.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span47 ft (14.3 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic966 (2020)
Projected traffic1,136 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 Cedar Flats RD over Munger Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Cedar Flats RD over Munger 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 October 2024.

How much traffic does Cedar Flats RD over Munger Creek carry?

About 966 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Cedar Flats RD over Munger Creek?

The structure is 51 ft (15.5 m) long with a longest span of 47 ft (14.3 m) and a deck 32 ft wide.

Who owns Cedar Flats RD over Munger Creek?

It is owned by the County Highway Agency.