US Bridges

Amiot DR E over Mo 364

Fair

St. Louis County, Missouri · S 29 T 46 N R 5 E · Structure no. 12064

Built
1999
26 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
211 ft
2 main spans
Daily traffic
4,268
2024 count
Owner
State
State Highway Agency

About this bridge

Amiot DR E over Mo 364 is a prestressed concrete continuous tee beam carrying Amiot DR E over Mo 364 in St. Louis County, Missouri. It was built in 1999, so it is 26 years old, younger 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 4,268 vehicles a day, roughly 3% of them trucks, projected to reach 6,402 by 2044. The structure is 211 ft (64.3 m) long and 42 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesAmiot DR E
CrossesMo 364
LocationS 29 T 46 N R 5 E
RouteCounty Highway 0
Coordinates38.70528, -90.47549
Functional classUrban 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.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating63.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length211 ft (64.3 m)
Longest span107 ft (32.7 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,268 (2024)
Projected traffic6,402 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed98.8 mi (159 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Amiot DR E over Mo 364 built?

It was built in 1999, making it 26 years old in 2025.

What condition is Amiot DR E over Mo 364 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 September 2024.

How much traffic does Amiot DR E over Mo 364 carry?

About 4,268 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Amiot DR E over Mo 364?

The structure is 211 ft (64.3 m) long with a longest span of 107 ft (32.7 m) and a deck 42 ft wide.

Who owns Amiot DR E over Mo 364?

It is owned by the State Highway Agency.