US Bridges

Mo 49 S over Cave Hollow Br

Fair

Iron County, Missouri · S 22 T 32 N R 3 E · Structure no. 3610

Built
1986
39 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
1,237
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 49 S over Cave Hollow Br is a concrete continuous culvert carrying Mo 49 S over Cave Hollow Br in Iron County, Missouri. It was built in 1986, so it is 39 years old, younger 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 1,237 vehicles a day, roughly 15% of them trucks, projected to reach 1,856 by 2044. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 52.2 mi (84 km).

Location

Open in Google Maps
CarriesMo 49 S
CrossesCave Hollow Br
LocationS 22 T 32 N R 3 E
RouteState Highway 49
CountyIron County
StateMissouri
Coordinates37.43943, -90.70049
Functional classRural Minor Arterial

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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating96.2 US tons
Inventory rating57.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,237 (2024)
Projected traffic1,856 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed52.2 mi (84 km)
TollOn a free road
National Highway SystemNo

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 Mo 49 S over Cave Hollow Br built?

It was built in 1986, making it 39 years old in 2025.

What condition is Mo 49 S over Cave Hollow Br 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 2023.

How much traffic does Mo 49 S over Cave Hollow Br carry?

About 1,237 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is Mo 49 S over Cave Hollow Br?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns Mo 49 S over Cave Hollow Br?

It is owned by the State Highway Agency.