US Bridges

Mo 163 S over Gans CR

FairPosted for load

Boone County, Missouri · S 7 T 47 N R 12 W · Structure no. 1496

Built
1966
59 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
136 ft
3 main spans
Daily traffic
3,684
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 163 S over Gans CR is a steel continuous stringer/multi-beam or girder carrying Mo 163 S over Gans CR in Boone County, Missouri. It was built in 1966, 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. Its operating status is: posted for load restriction.

It carries about 3,684 vehicles a day, roughly 4% of them trucks, projected to reach 6,447 by 2044. The structure is 136 ft (41.5 m) long and 29 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesMo 163 S
CrossesGans CR
LocationS 7 T 47 N R 12 W
RouteState Highway 163
CountyBoone County
StateMissouri
Coordinates38.87576, -92.32498
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating28.8 US tons
Inventory rating17.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length136 ft (41.5 m)
Longest span52 ft (15.8 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,684 (2024)
Projected traffic6,447 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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$1.6 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mo 163 S over Gans CR built?

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

What condition is Mo 163 S over Gans 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 2023.

How much traffic does Mo 163 S over Gans CR carry?

About 3,684 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Mo 163 S over Gans CR?

The structure is 136 ft (41.5 m) long with a longest span of 52 ft (15.8 m) and a deck 29 ft wide.

Who owns Mo 163 S over Gans CR?

It is owned by the State Highway Agency.