US Bridges

E 179th ST over Duncan Br

Good

Cass County, Missouri · S 16 T 46 N R 30 W · Structure no. 36625

Built
2020
5 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
20 ft
2 main spans
Daily traffic
3,574
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

E 179th ST over Duncan Br is a concrete culvert carrying E 179th ST over Duncan Br in Cass County, Missouri. It was built in 2020, so it is 5 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 3,574 vehicles a day, roughly 10% of them trucks, projected to reach 5,718 by 2044. The structure is 20 ft (6.2 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesE 179th ST
CrossesDuncan Br
LocationS 16 T 46 N R 30 W
RouteCounty Highway 347
Coordinates38.79092, -94.24319
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
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 typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length20 ft (6.2 m)
Longest span10 ft (3.1 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,574 (2024)
Projected traffic5,718 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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 E 179th ST over Duncan Br built?

It was built in 2020, making it 5 years old in 2025.

What condition is E 179th ST over Duncan Br 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 April 2023.

How much traffic does E 179th ST over Duncan Br carry?

About 3,574 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is E 179th ST over Duncan Br?

The structure is 20 ft (6.2 m) long with a longest span of 10 ft (3.1 m) and a deck 32 ft wide.

Who owns E 179th ST over Duncan Br?

It is owned by the City or Municipal Highway Agency.