US Bridges

US 36 E over Sights Br

Poor

Linn County, Missouri · S 8 T 57 N R 18 W · Structure no. 11767

Built
1924
101 years old
Condition
Poor
inspected December 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
8,773
2024 count
Owner
State
State Highway Agency

About this bridge

US 36 E over Sights Br is a concrete continuous culvert carrying US 36 E over Sights Br in Linn County, Missouri. It was built in 1924, so it is 101 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 8,773 vehicles a day, roughly 41% of them trucks, projected to reach 15,353 by 2044. The structure is 21 ft (6.4 m) long and 51 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesUS 36 E
CrossesSights Br
LocationS 8 T 57 N R 18 W
RouteU.S. Route 36
CountyLinn County
StateMissouri
Coordinates39.76094, -92.93219
Functional classRural Principal Arterial - Other

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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating23.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width51 ft (15.6 m)
Roadway width49 ft (15 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,773 (2024)
Projected traffic15,353 by 2044
Trucks41%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$450,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 36 E over Sights Br built?

It was built in 1924, making it 101 years old in 2025.

What condition is US 36 E over Sights Br 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 December 2024.

How much traffic does US 36 E over Sights Br carry?

About 8,773 vehicles per day (2024 count), of which roughly 41% are trucks.

How long is US 36 E over Sights Br?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 51 ft wide.

Who owns US 36 E over Sights Br?

It is owned by the State Highway Agency.