US Bridges

County RD 301 over Daniel Boone Lk

FairPosted for load

Shelby County, Missouri · S 31 T 58 N R 12 W · Structure no. 16744

Built
1975
50 years old
Condition
Fair
inspected March 2024
Type
Girder and Floorbeam System
Steel
Length
35 ft
2 main spans
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 301 over Daniel Boone Lk is a steel girder and floorbeam system carrying County RD 301 over Daniel Boone Lk in Shelby County, Missouri. It was built in 1975, so it is 50 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 5 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 38 by 2044. The structure is 35 ft (10.7 m) long and 12 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCounty RD 301
CrossesDaniel Boone Lk
LocationS 31 T 58 N R 12 W
RouteCounty Highway 131
CountyShelby County
StateMissouri
Coordinates39.78833, -92.28725
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating69.4 US tons
Inventory rating50.6 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length35 ft (10.7 m)
Longest span17 ft (5.2 m)
Deck width12 ft (3.8 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic38 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 County RD 301 over Daniel Boone Lk built?

It was built in 1975, making it 50 years old in 2025.

What condition is County RD 301 over Daniel Boone Lk 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 March 2024.

How much traffic does County RD 301 over Daniel Boone Lk carry?

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

How long is County RD 301 over Daniel Boone Lk?

The structure is 35 ft (10.7 m) long with a longest span of 17 ft (5.2 m) and a deck 12 ft wide.

Who owns County RD 301 over Daniel Boone Lk?

It is owned by the County Highway Agency.