US Bridges

US 160 E over Small Str

Fair

Oregon County, Missouri · S 23 T 23 N R 3 W · Structure no. 4544

Built
1922
103 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete
Length
33 ft
1 main span
Daily traffic
437
2024 count
Owner
State
State Highway Agency

About this bridge

US 160 E over Small Str is a concrete tee beam carrying US 160 E over Small Str in Oregon County, Missouri. It was built in 1922, so it is 103 years old, older than the Missouri average of 45.1 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 437 vehicles a day, roughly 10% of them trucks, projected to reach 656 by 2044. The structure is 33 ft (10.1 m) long and 23 ft wide. If it were closed, the detour would be 37.9 mi (61 km).

Location

Open in Google Maps
CarriesUS 160 E
CrossesSmall Str
LocationS 23 T 23 N R 3 W
RouteU.S. Route 160
CountyOregon County
StateMissouri
Coordinates36.64421, -91.25532
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic437 (2024)
Projected traffic656 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.9 mi (61 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$331,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 160 E over Small Str built?

It was built in 1922, making it 103 years old in 2025.

What condition is US 160 E over Small Str 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 February 2024.

How much traffic does US 160 E over Small Str carry?

About 437 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is US 160 E over Small Str?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 23 ft wide.

Who owns US 160 E over Small Str?

It is owned by the State Highway Agency.