US Bridges

Mo 100 E over Frene CR

Fair

Gasconade County, Missouri · S 25 T 46 N R 5 W · Structure no. 6032

Built
1951
74 years old, rebuilt 2005
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
167 ft
3 main spans
Daily traffic
4,349
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 100 E over Frene CR is a steel continuous stringer/multi-beam or girder carrying Mo 100 E over Frene CR in Gasconade County, Missouri. It was built in 1951 and reconstructed in 2005, so it is 74 years old, older 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 5 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 4,349 vehicles a day, roughly 9% of them trucks, projected to reach 6,524 by 2044. The structure is 167 ft (50.9 m) long and 40 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesMo 100 E
CrossesFrene CR
LocationS 25 T 46 N R 5 W
RouteState Highway 100
CountyGasconade County
StateMissouri
Coordinates38.70664, -91.43138
Functional classRural Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length167 ft (50.9 m)
Longest span63 ft (19.1 m)
Deck width40 ft (12.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,349 (2024)
Projected traffic6,524 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 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 Mo 100 E over Frene CR built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 2005.

What condition is Mo 100 E over Frene CR 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 September 2024.

How much traffic does Mo 100 E over Frene CR carry?

About 4,349 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Mo 100 E over Frene CR?

The structure is 167 ft (50.9 m) long with a longest span of 63 ft (19.1 m) and a deck 40 ft wide.

Who owns Mo 100 E over Frene CR?

It is owned by the State Highway Agency.