US Bridges

Arrow Rock RD over Sulpher Spring Br

Good

Cooper County, Missouri · S 17 T 49 N R 18 W · Structure no. 35365

Built
2005
20 years old
Condition
Good
inspected December 2023
Type
Culvert
Steel Continuous
Length
21 ft
2 main spans
Daily traffic
25
2024 count
Owner
County
County Highway Agency

About this bridge

Arrow Rock RD over Sulpher Spring Br is a steel continuous culvert carrying Arrow Rock RD over Sulpher Spring Br in Cooper County, Missouri. It was built in 2005, so it is 20 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25 vehicles a day, roughly 10% of them trucks, projected to reach 33 by 2044. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesArrow Rock RD
CrossesSulpher Spring Br
LocationS 17 T 49 N R 18 W
RouteCounty Highway 3
CountyCooper County
StateMissouri
Coordinates39.01156, -92.913
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.3 m)
Longest span9 ft (2.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic33 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Arrow Rock RD over Sulpher Spring Br built?

It was built in 2005, making it 20 years old in 2025.

What condition is Arrow Rock RD over Sulpher Spring Br in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does Arrow Rock RD over Sulpher Spring Br carry?

About 25 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Arrow Rock RD over Sulpher Spring Br?

The structure is 21 ft (6.3 m) long with a longest span of 9 ft (2.6 m).

Who owns Arrow Rock RD over Sulpher Spring Br?

It is owned by the County Highway Agency.