US Bridges

Mo 58 E over Duncan Br

Good

Cass County, Missouri · S 27 T 46 N R 30 W · Structure no. 33445

Built
2011
14 years old
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
85 ft
1 main span
Daily traffic
2,633
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 58 E over Duncan Br is a prestressed concrete box beam or girders - single or spread carrying Mo 58 E over Duncan Br in Cass County, Missouri. It was built in 2011, so it is 14 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 2,633 vehicles a day, roughly 9% of them trucks, projected to reach 4,871 by 2044. The structure is 85 ft (26 m) long and 26 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesMo 58 E
CrossesDuncan Br
LocationS 27 T 46 N R 30 W
RouteState Highway 58
CountyCass County
StateMissouri
Coordinates38.77364, -94.23714
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating59.5 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadHS 20 + Mod
Structure length85 ft (26 m)
Longest span50 ft (15.2 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,633 (2024)
Projected traffic4,871 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$751,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 58 E over Duncan Br built?

It was built in 2011, making it 14 years old in 2025.

What condition is Mo 58 E 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 November 2023.

How much traffic does Mo 58 E over Duncan Br carry?

About 2,633 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Mo 58 E over Duncan Br?

The structure is 85 ft (26 m) long with a longest span of 50 ft (15.2 m) and a deck 26 ft wide.

Who owns Mo 58 E over Duncan Br?

It is owned by the State Highway Agency.