US Bridges

Airport RD over Muddy Creek

FairPosted for load

Benton County, Oregon · 3.6 Mile West of HWY 99W · Structure no. 14404A252 00360

Built
1958
67 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
201 ft
8 main spans
Daily traffic
493
2021 count
Owner
County
County Highway Agency

About this bridge

Airport RD over Muddy Creek is a concrete tee beam carrying Airport RD over Muddy Creek in Benton County, Oregon. It was built in 1958, so it is 67 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. Its operating status is: posted for other load-capacity restriction.

It carries about 493 vehicles a day, roughly 10% of them trucks, projected to reach 699 by 2041. The structure is 201 ft (61.3 m) long and 29 ft wide. If it were closed, the detour would be 9.3 mi (15 km).

Location

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CarriesAirport RD
CrossesMuddy Creek
Location3.6 Mile West of HWY 99W
RouteCounty Highway 0
CountyBenton County
StateOregon
Coordinates44.49682, -123.33086
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating37.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadH 20
Structure length201 ft (61.3 m)
Longest span25 ft (7.6 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic493 (2021)
Projected traffic699 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.3 mi (15 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Airport RD over Muddy Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is Airport RD over Muddy 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 Airport RD over Muddy Creek carry?

About 493 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Airport RD over Muddy Creek?

The structure is 201 ft (61.3 m) long with a longest span of 25 ft (7.6 m) and a deck 29 ft wide.

Who owns Airport RD over Muddy Creek?

It is owned by the County Highway Agency.