US Bridges

15504 over Big Deer CR

Fair

Bates County, Missouri · S 18 T 42 N R 30 W · Structure no. 15159

Built
1950
75 years old, rebuilt 1992
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
79 ft
2 main spans
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

15504 over Big Deer CR is a steel continuous stringer/multi-beam or girder carrying 15504 over Big Deer CR in Bates County, Missouri. It was built in 1950 and reconstructed in 1992, so it is 75 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2043. The structure is 79 ft (24.1 m) long and 20 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries15504
CrossesBig Deer CR
LocationS 18 T 42 N R 30 W
RouteCounty Highway 87
CountyBates County
StateMissouri
Coordinates38.44406, -94.28874
Functional classRural Local

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 inspectionJanuary 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.7 US tons
Inventory rating19.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length79 ft (24.1 m)
Longest span62 ft (18.9 m)
Deck width20 ft (6.2 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic39 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 15504 over Big Deer CR built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1992.

What condition is 15504 over Big 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 January 2025.

How much traffic does 15504 over Big Deer CR carry?

About 30 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 15504 over Big Deer CR?

The structure is 79 ft (24.1 m) long with a longest span of 62 ft (18.9 m) and a deck 20 ft wide.

Who owns 15504 over Big Deer CR?

It is owned by the County Highway Agency.