US Bridges

Mo 100 E over Deer CR

Fair

Osage County, Missouri · S 20 T 45 N R 8 W · Structure no. 1513

Built
1966
59 years old, rebuilt 2022
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
158 ft
3 main spans
Daily traffic
464
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 100 E over Deer CR is a steel continuous stringer/multi-beam or girder carrying Mo 100 E over Deer CR in Osage County, Missouri. It was built in 1966 and reconstructed in 2022, so it is 59 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 6 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 464 vehicles a day, roughly 12% of them trucks, projected to reach 673 by 2044. The structure is 158 ft (48.2 m) long and 29 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

CarriesMo 100 E
CrossesDeer CR
LocationS 20 T 45 N R 8 W
RouteState Highway 100
Coordinates38.6519, -91.84034
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.7 US tons
Inventory rating19.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length158 ft (48.2 m)
Longest span61 ft (18.6 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic464 (2024)
Projected traffic673 by 2044
Trucks12%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 100 E over Deer CR built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2022.

What condition is Mo 100 E over Deer 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 February 2025.

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

About 464 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Mo 100 E over Deer CR?

The structure is 158 ft (48.2 m) long with a longest span of 61 ft (18.6 m) and a deck 29 ft wide.

Who owns Mo 100 E over Deer CR?

It is owned by the State Highway Agency.