US Bridges

US 36 W over Blackwell CR

Fair

Livingston County, Missouri · S 7 T 57 N R 23 W · Structure no. 972

Built
1964
61 years old, rebuilt 2023
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
103 ft
3 main spans
Daily traffic
4,527
2024 count
Owner
State
State Highway Agency

About this bridge

US 36 W over Blackwell CR is a concrete continuous slab carrying US 36 W over Blackwell CR in Livingston County, Missouri. It was built in 1964 and reconstructed in 2023, so it is 61 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 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 4,527 vehicles a day, roughly 33% of them trucks, projected to reach 7,922 by 2044. The structure is 103 ft (31.4 m) long and 31 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesUS 36 W
CrossesBlackwell CR
LocationS 7 T 57 N R 23 W
RouteU.S. Route 36
CountyLivingston County
StateMissouri
Coordinates39.77502, -93.53123
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.5 US tons
Inventory rating36.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length103 ft (31.4 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,527 (2024)
Projected traffic7,922 by 2044
Trucks33%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 36 W over Blackwell CR built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2023.

What condition is US 36 W over Blackwell 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 October 2024.

How much traffic does US 36 W over Blackwell CR carry?

About 4,527 vehicles per day (2024 count), of which roughly 33% are trucks.

How long is US 36 W over Blackwell CR?

The structure is 103 ft (31.4 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns US 36 W over Blackwell CR?

It is owned by the State Highway Agency.