US Bridges

Heggenmann RD over Dry Fk

Fair

Warren County, Missouri · S 19 T 45 N R 2 W · Structure no. 16453

Built
1989
36 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
49 ft
11 main spans
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

Heggenmann RD over Dry Fk is a concrete continuous slab carrying Heggenmann RD over Dry Fk in Warren County, Missouri. It was built in 1989, so it is 36 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 56 by 2044. The structure is 49 ft (14.9 m) long and 20 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesHeggenmann RD
CrossesDry Fk
LocationS 19 T 45 N R 2 W
RouteCounty Highway 121
CountyWarren County
StateMissouri
Coordinates38.67883, -91.13585
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating45.6 US tons
Inventory rating23.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadOther
Structure length49 ft (14.9 m)
Longest span4 ft (1.2 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic56 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Heggenmann RD over Dry Fk built?

It was built in 1989, making it 36 years old in 2025.

What condition is Heggenmann RD over Dry Fk 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 Heggenmann RD over Dry Fk carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Heggenmann RD over Dry Fk?

The structure is 49 ft (14.9 m) long with a longest span of 4 ft (1.2 m) and a deck 20 ft wide.

Who owns Heggenmann RD over Dry Fk?

It is owned by the County Highway Agency.