US Bridges

Echo Ave (321) over Ward Br

Fair

Macon County, Missouri · S 15 T 58 N R 16 W · Structure no. 21736

Built
1998
27 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
153 ft
3 main spans
Daily traffic
40
2024 count
Owner
County
County Highway Agency

About this bridge

Echo Ave (321) over Ward Br is a prestressed concrete continuous tee beam carrying Echo Ave (321) over Ward Br in Macon County, Missouri. It was built in 1998, so it is 27 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 40 vehicles a day, roughly 10% of them trucks, projected to reach 44 by 2044. The structure is 153 ft (46.6 m) long and 25 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

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CarriesEcho Ave (321)
CrossesWard Br
LocationS 15 T 58 N R 16 W
RouteCounty Highway 321
CountyMacon County
StateMissouri
Coordinates39.83553, -92.67548
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length153 ft (46.6 m)
Longest span51 ft (15.5 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2024)
Projected traffic44 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Echo Ave (321) over Ward Br built?

It was built in 1998, making it 27 years old in 2025.

What condition is Echo Ave (321) over Ward Br 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 Echo Ave (321) over Ward Br carry?

About 40 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Echo Ave (321) over Ward Br?

The structure is 153 ft (46.6 m) long with a longest span of 51 ft (15.5 m) and a deck 25 ft wide.

Who owns Echo Ave (321) over Ward Br?

It is owned by the County Highway Agency.