US Bridges

Mo 90 E over Yarnell Br

Poor

McDonald County, Missouri · S 16 T 21 N R 33 W · Structure no. 5314

Built
1930
95 years old
Condition
Poor
inspected October 2024
Type
Tee Beam
Concrete
Length
65 ft
2 main spans
Daily traffic
4,036
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 90 E over Yarnell Br is a concrete tee beam carrying Mo 90 E over Yarnell Br in McDonald County, Missouri. It was built in 1930, so it is 95 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 4,036 vehicles a day, roughly 11% of them trucks, projected to reach 7,063 by 2044. The structure is 65 ft (19.8 m) long and 28 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

Open in Google Maps
CarriesMo 90 E
CrossesYarnell Br
LocationS 16 T 21 N R 33 W
RouteState Highway 90
CountyMcDonald County
StateMissouri
Coordinates36.55186, -94.50004
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.6 US tons
Inventory rating30.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length65 ft (19.8 m)
Longest span32 ft (9.9 m)
Deck width28 ft (8.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,036 (2024)
Projected traffic7,063 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$854,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 90 E over Yarnell Br built?

It was built in 1930, making it 95 years old in 2025.

What condition is Mo 90 E over Yarnell Br in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Mo 90 E over Yarnell Br carry?

About 4,036 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Mo 90 E over Yarnell Br?

The structure is 65 ft (19.8 m) long with a longest span of 32 ft (9.9 m) and a deck 28 ft wide.

Who owns Mo 90 E over Yarnell Br?

It is owned by the State Highway Agency.