US Bridges

N Iron Mountain RD over Panther CR

Good

Webster County, Missouri · S 25 T 29 N R 19 W · Structure no. 35909

Built
2018
7 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
75
2023 count
Owner
County
County Highway Agency

About this bridge

N Iron Mountain RD over Panther CR is a concrete culvert carrying N Iron Mountain RD over Panther CR in Webster County, Missouri. It was built in 2018, so it is 7 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 75 vehicles a day, roughly 10% of them trucks, projected to reach 124 by 2043. The structure is 27 ft (8.2 m) long and 26 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesN Iron Mountain RD
CrossesPanther CR
LocationS 25 T 29 N R 19 W
RouteCounty Highway 324
CountyWebster County
StateMissouri
Coordinates37.17785, -92.95715
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.5 US tons
Inventory rating36.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length27 ft (8.2 m)
Longest span13 ft (4 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2023)
Projected traffic124 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 N Iron Mountain RD over Panther CR built?

It was built in 2018, making it 7 years old in 2025.

What condition is N Iron Mountain RD over Panther CR 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 April 2023.

How much traffic does N Iron Mountain RD over Panther CR carry?

About 75 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is N Iron Mountain RD over Panther CR?

The structure is 27 ft (8.2 m) long with a longest span of 13 ft (4 m) and a deck 26 ft wide.

Who owns N Iron Mountain RD over Panther CR?

It is owned by the County Highway Agency.