US Bridges

US 61 S over Whitcomb CR

Fair

Lincoln County, Missouri · S 31 T 49 N R 1 E · Structure no. 4928

Built
1961
64 years old, rebuilt 1970
Condition
Fair
inspected September 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
43,574
2024 count
Owner
State
State Highway Agency

About this bridge

US 61 S over Whitcomb CR is a concrete continuous culvert carrying US 61 S over Whitcomb CR in Lincoln County, Missouri. It was built in 1961 and reconstructed in 1970, so it is 64 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 43,574 vehicles a day, roughly 17% of them trucks, projected to reach 87,148 by 2044. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 61 S
CrossesWhitcomb CR
LocationS 31 T 49 N R 1 E
RouteU.S. Route 61
Coordinates38.96257, -90.95112
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating108.1 US tons
Inventory rating65.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43,574 (2024)
Projected traffic87,148 by 2044
Trucks17%
Lanes on structure4
Traffic directionTwo-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 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 US 61 S over Whitcomb CR built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1970.

What condition is US 61 S over Whitcomb 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 September 2024.

How much traffic does US 61 S over Whitcomb CR carry?

About 43,574 vehicles per day (2024 count), of which roughly 17% are trucks.

How long is US 61 S over Whitcomb CR?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns US 61 S over Whitcomb CR?

It is owned by the State Highway Agency.