US Bridges

Mo 100 E over Bailey CR

Poor

Gasconade County, Missouri · S 6 T 45 N R 6 W · Structure no. 6204

Built
1948
77 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
147 ft
3 main spans
Daily traffic
341
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 100 E over Bailey CR is a steel stringer/multi-beam or girder carrying Mo 100 E over Bailey CR in Gasconade County, Missouri. It was built in 1948, so it is 77 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 341 vehicles a day, roughly 9% of them trucks, projected to reach 443 by 2044. The structure is 147 ft (44.8 m) long and 25 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

CarriesMo 100 E
CrossesBailey CR
LocationS 6 T 45 N R 6 W
RouteState Highway 100
Coordinates38.67454, -91.63833
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 alignment6: Equal to present minimum criteria
Operating rating31.7 US tons
Inventory rating19.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length147 ft (44.8 m)
Longest span55 ft (16.8 m)
Deck width25 ft (7.5 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic341 (2024)
Projected traffic443 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 100 E over Bailey CR built?

It was built in 1948, making it 77 years old in 2025.

What condition is Mo 100 E over Bailey CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

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

About 341 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Mo 100 E over Bailey CR?

The structure is 147 ft (44.8 m) long with a longest span of 55 ft (16.8 m) and a deck 25 ft wide.

Who owns Mo 100 E over Bailey CR?

It is owned by the State Highway Agency.