US Bridges

Sunderman RD over Mcgowan Creek

Fair

Lane County, Oregon · 080 MI N Springfield · Structure no. 39C164194800250

Built
1975
50 years old
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
56 ft
2 main spans
Daily traffic
838
2020 count
Owner
County
County Highway Agency

About this bridge

Sunderman RD over Mcgowan Creek is a prestressed concrete slab carrying Sunderman RD over Mcgowan Creek in Lane County, Oregon. It was built in 1975, so it is 50 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 838 vehicles a day, roughly 10% of them trucks, projected to reach 983 by 2025. The structure is 56 ft (17.1 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesSunderman RD
CrossesMcgowan Creek
Location080 MI N Springfield
RouteCounty Highway C1948
CountyLane County
StateOregon
Coordinates44.14172, -122.91313
Functional classRural Minor 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span28 ft (8.5 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic838 (2020)
Projected traffic983 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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 Sunderman RD over Mcgowan Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Sunderman RD over Mcgowan 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 August 2024.

How much traffic does Sunderman RD over Mcgowan Creek carry?

About 838 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Sunderman RD over Mcgowan Creek?

The structure is 56 ft (17.1 m) long with a longest span of 28 ft (8.5 m) and a deck 32 ft wide.

Who owns Sunderman RD over Mcgowan Creek?

It is owned by the County Highway Agency.