US Bridges

NE 3473 over Trib Big Deer CR

Poor

Bates County, Missouri · S 30 T 42 N R 30 W · Structure no. 16159

Built
1920
105 years old, rebuilt 1985
Condition
Poor
inspected January 2025
Type
Girder and Floorbeam System
Steel
Length
50 ft
1 main span
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

NE 3473 over Trib Big Deer CR is a steel girder and floorbeam system carrying NE 3473 over Trib Big Deer CR in Bates County, Missouri. It was built in 1920 and reconstructed in 1985, so it is 105 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 4 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2043. The structure is 50 ft (15.2 m) long and 18 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesNE 3473
CrossesTrib Big Deer CR
LocationS 30 T 42 N R 30 W
RouteCounty Highway 112
Coordinates38.42245, -94.27874
Functional classRural Local

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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating54.6 US tons
Inventory rating24.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length50 ft (15.2 m)
Longest span48 ft (14.6 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic39 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$272,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was NE 3473 over Trib Big Deer CR built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1985.

What condition is NE 3473 over Trib Big Deer 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 January 2025.

How much traffic does NE 3473 over Trib Big Deer CR carry?

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

How long is NE 3473 over Trib Big Deer CR?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m) and a deck 18 ft wide.

Who owns NE 3473 over Trib Big Deer CR?

It is owned by the County Highway Agency.