US Bridges

323rd ST over Big Br CR

Fair

Daviess County, Missouri · S 35 T 58 N R 26 W · Structure no. 17306

Built
2000
25 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

323rd ST over Big Br CR is a concrete slab carrying 323rd ST over Big Br CR in Daviess County, Missouri. It was built in 2000, so it is 25 years old, younger 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 35 by 2044. The structure is 32 ft (9.8 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries323rd ST
CrossesBig Br CR
LocationS 35 T 58 N R 26 W
RouteCounty Highway 148
CountyDaviess County
StateMissouri
Coordinates39.78954, -93.78718
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic35 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 323rd ST over Big Br CR built?

It was built in 2000, making it 25 years old in 2025.

What condition is 323rd ST over Big Br 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 2024.

How much traffic does 323rd ST over Big Br CR carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 323rd ST over Big Br CR?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 23 ft wide.

Who owns 323rd ST over Big Br CR?

It is owned by the County Highway Agency.