US Bridges

Rt Aa E over Big CR

Fair

Harrison County, Missouri · S 21 T 62 N R 28 W · Structure no. 8046

Built
1962
63 years old, rebuilt 2009
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
256 ft
3 main spans
Daily traffic
92
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Aa E over Big CR is a steel continuous stringer/multi-beam or girder carrying Rt Aa E over Big CR in Harrison County, Missouri. It was built in 1962 and reconstructed in 2009, so it is 63 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 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 92 vehicles a day, roughly 36% of them trucks, projected to reach 120 by 2044. The structure is 256 ft (78 m) long and 25 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesRt Aa E
CrossesBig CR
LocationS 21 T 62 N R 28 W
RouteState Highway 0AA
CountyHarrison County
StateMissouri
Coordinates40.15596, -94.06212
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating23.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadH 15
Structure length256 ft (78 m)
Longest span70 ft (21.3 m)
Deck width25 ft (7.5 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic92 (2024)
Projected traffic120 by 2044
Trucks36%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt Aa E over Big CR built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2009.

What condition is Rt Aa E over Big CR 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 2023.

How much traffic does Rt Aa E over Big CR carry?

About 92 vehicles per day (2024 count), of which roughly 36% are trucks.

How long is Rt Aa E over Big CR?

The structure is 256 ft (78 m) long with a longest span of 70 ft (21.3 m) and a deck 25 ft wide.

Who owns Rt Aa E over Big CR?

It is owned by the State Highway Agency.