US Bridges

Enon RD over Muddy CR

Good

Linn County, Missouri · S 1 T 57 N R 21 W · Structure no. 32255

Built
2007
18 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
70 ft
1 main span
Daily traffic
25
2024 count
Owner
County
County Highway Agency

About this bridge

Enon RD over Muddy CR is a steel stringer/multi-beam or girder carrying Enon RD over Muddy CR in Linn County, Missouri. It was built in 2007, so it is 18 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25 vehicles a day, roughly 10% of them trucks, projected to reach 28 by 2044. The structure is 70 ft (21.3 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesEnon RD
CrossesMuddy CR
LocationS 1 T 57 N R 21 W
RouteCounty Highway 345
Coordinates39.79275, -93.20008
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.5 US tons
Inventory rating38.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span68 ft (20.7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic28 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Enon RD over Muddy CR built?

It was built in 2007, making it 18 years old in 2025.

What condition is Enon RD over Muddy CR 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 December 2024.

How much traffic does Enon RD over Muddy CR carry?

About 25 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Enon RD over Muddy CR?

The structure is 70 ft (21.3 m) long with a longest span of 68 ft (20.7 m) and a deck 24 ft wide.

Who owns Enon RD over Muddy CR?

It is owned by the County Highway Agency.