US Bridges

SW Bluff RD over Br of Horseshoe Lk

PoorPosted for load

Buchanan County, Missouri · S 12 T 56 N R 36 W · Structure no. 18582

Built
1916
109 years old
Condition
Poor
inspected January 2023
Type
Arch - Deck
Concrete
Length
30 ft
1 main span
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

SW Bluff RD over Br of Horseshoe Lk is a concrete arch - deck carrying SW Bluff RD over Br of Horseshoe Lk in Buchanan County, Missouri. It was built in 1916, so it is 109 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. Its operating status is: posted for load restriction.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2044. The structure is 30 ft (9.1 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSW Bluff RD
CrossesBr of Horseshoe Lk
LocationS 12 T 56 N R 36 W
RouteCounty Highway 191
Coordinates39.67891, -94.88922
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating20.8 US tons
Inventory rating9.9 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length30 ft (9.1 m)
Longest span24 ft (7.3 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic40 by 2044
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$289,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SW Bluff RD over Br of Horseshoe Lk built?

It was built in 1916, making it 109 years old in 2025.

What condition is SW Bluff RD over Br of Horseshoe Lk 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 2023.

How much traffic does SW Bluff RD over Br of Horseshoe Lk carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is SW Bluff RD over Br of Horseshoe Lk?

The structure is 30 ft (9.1 m) long with a longest span of 24 ft (7.3 m) and a deck 26 ft wide.

Who owns SW Bluff RD over Br of Horseshoe Lk?

It is owned by the County Highway Agency.