US Bridges

Rt Aa S over Linn CR

Good

Clark County, Missouri · S 36 T 66 N R 9 W · Structure no. 32277

Built
2008
17 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
92 ft
1 main span
Daily traffic
203
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Aa S over Linn CR is a prestressed concrete continuous stringer/multi-beam or girder carrying Rt Aa S over Linn CR in Clark County, Missouri. It was built in 2008, so it is 17 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 203 vehicles a day, roughly 14% of them trucks, projected to reach 294 by 2044. The structure is 92 ft (28 m) long and 27 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesRt Aa S
CrossesLinn CR
LocationS 36 T 66 N R 9 W
RouteState Highway 0AA
CountyClark County
StateMissouri
Coordinates40.48749, -91.84943
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.3 US tons
Inventory rating45.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length92 ft (28 m)
Longest span91 ft (27.7 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic203 (2024)
Projected traffic294 by 2044
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt Aa S over Linn CR built?

It was built in 2008, making it 17 years old in 2025.

What condition is Rt Aa S over Linn CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does Rt Aa S over Linn CR carry?

About 203 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is Rt Aa S over Linn CR?

The structure is 92 ft (28 m) long with a longest span of 91 ft (27.7 m) and a deck 27 ft wide.

Who owns Rt Aa S over Linn CR?

It is owned by the State Highway Agency.