US Bridges

Kulman RD over Ross CR

FairPosted for load

Benton County, Missouri · S 15 T 41 N R 21 W · Structure no. 18063

Built
1970
55 years old, rebuilt 1995
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
83 ft
7 main spans
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

Kulman RD over Ross CR is a concrete continuous slab carrying Kulman RD over Ross CR in Benton County, Missouri. It was built in 1970 and reconstructed in 1995, so it is 55 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 30 vehicles a day, roughly 10% of them trucks, projected to reach 44 by 2043. The structure is 83 ft (25.3 m) long and 14 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesKulman RD
CrossesRoss CR
LocationS 15 T 41 N R 21 W
RouteCounty Highway 171
CountyBenton County
StateMissouri
Coordinates38.32744, -93.23303
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 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 geometry6: Equal to present minimum criteria
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating14.9 US tons
Inventory rating8.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadOther
Structure length83 ft (25.3 m)
Longest span13 ft (4 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic44 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$621,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Kulman RD over Ross CR built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1995.

What condition is Kulman RD over Ross 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 January 2024.

How much traffic does Kulman RD over Ross CR carry?

About 30 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Kulman RD over Ross CR?

The structure is 83 ft (25.3 m) long with a longest span of 13 ft (4 m) and a deck 14 ft wide.

Who owns Kulman RD over Ross CR?

It is owned by the County Highway Agency.