US Bridges

Elk RD over Nelson CR

PoorPosted for load

Laclede County, Missouri · S 25 T 34 N R 13 W · Structure no. 19621

Built
1978
47 years old
Condition
Poor
inspected March 2023
Type
Tee Beam
Concrete
Length
70 ft
3 main spans
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

Elk RD over Nelson CR is a concrete tee beam carrying Elk RD over Nelson CR in Laclede County, Missouri. It was built in 1978, so it is 47 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 3 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 40 vehicles a day, roughly 10% of them trucks, projected to reach 56 by 2043. The structure is 70 ft (21.3 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesElk RD
CrossesNelson CR
LocationS 25 T 34 N R 13 W
RouteCounty Highway 228
Coordinates37.62294, -92.31859
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating5 US tons
Inventory rating3 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length70 ft (21.3 m)
Longest span21 ft (6.4 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic56 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$527,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Elk RD over Nelson CR built?

It was built in 1978, making it 47 years old in 2025.

What condition is Elk RD over Nelson 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 March 2023.

How much traffic does Elk RD over Nelson CR carry?

About 40 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Elk RD over Nelson CR?

The structure is 70 ft (21.3 m) long with a longest span of 21 ft (6.4 m) and a deck 24 ft wide.

Who owns Elk RD over Nelson CR?

It is owned by the County Highway Agency.