US Bridges

County RD 526 over Sugar CR

PoorPosted for load

Lewis County, Missouri · S 6 T 61 N R 6 W · Structure no. 16632

Built
1910
115 years old
Condition
Poor
inspected February 2024
Type
Truss - Thru
Steel
Length
81 ft
1 main span
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 526 over Sugar CR is a steel truss - thru carrying County RD 526 over Sugar CR in Lewis County, Missouri. It was built in 1910, so it is 115 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 44 by 2044. The structure is 81 ft (24.7 m) long and 12 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty RD 526
CrossesSugar CR
LocationS 6 T 61 N R 6 W
RouteCounty Highway 127
CountyLewis County
StateMissouri
Coordinates40.1205, -91.59947
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
Deck8 Very GoodNo problems noted.
Superstructure4 PoorAdvanced section loss, deterioration, 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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating6.9 US tons
Inventory rating6.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length81 ft (24.7 m)
Longest span80 ft (24.4 m)
Deck width12 ft (3.7 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic44 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$599,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 526 over Sugar CR built?

It was built in 1910, making it 115 years old in 2025.

What condition is County RD 526 over Sugar 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 February 2024.

How much traffic does County RD 526 over Sugar CR carry?

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

How long is County RD 526 over Sugar CR?

The structure is 81 ft (24.7 m) long with a longest span of 80 ft (24.4 m) and a deck 12 ft wide.

Who owns County RD 526 over Sugar CR?

It is owned by the County Highway Agency.