US Bridges

Monument Drive over Louse Creek

Fair

Josephine County, Oregon · T35S-R6W-S26/25 Josephine · Structure no. 33C27 220000034

Built
1974
51 years old
Condition
Fair
inspected October 2024
Type
Slab
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
6,962
2020 count
Owner
County
County Highway Agency

About this bridge

Monument Drive over Louse Creek is a prestressed concrete slab carrying Monument Drive over Louse Creek in Josephine 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 6,962 vehicles a day, roughly 10% of them trucks, projected to reach 7,712 by 2025. The structure is 40 ft (12.2 m) long and 32 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesMonument Drive
CrossesLouse Creek
LocationT35S-R6W-S26/25 Josephine
RouteCounty Highway A3340
CountyJosephine County
StateOregon
Coordinates42.49694, -123.36763
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,962 (2020)
Projected traffic7,712 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$205,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Monument Drive over Louse Creek built?

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

What condition is Monument Drive over Louse 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 Monument Drive over Louse Creek carry?

About 6,962 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Monument Drive over Louse Creek?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 32 ft wide.

Who owns Monument Drive over Louse Creek?

It is owned by the County Highway Agency.