US Bridges

Rt Zz S over Wolf Den Br

Fair

Harrison County, Missouri · S 5 T 62 N R 29 W · Structure no. 8428

Built
1964
61 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
153
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Zz S over Wolf Den Br is a concrete continuous culvert carrying Rt Zz S over Wolf Den Br in Harrison County, Missouri. It was built in 1964, so it is 61 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.

It carries about 153 vehicles a day, roughly 3% of them trucks, projected to reach 199 by 2044. The structure is 29 ft (8.8 m) long and 33 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesRt Zz S
CrossesWolf Den Br
LocationS 5 T 62 N R 29 W
RouteState Highway 0ZZ
CountyHarrison County
StateMissouri
Coordinates40.19636, -94.19786
Functional classRural Major Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.3 US tons
Inventory rating49.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length29 ft (8.8 m)
Longest span12 ft (3.7 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic153 (2024)
Projected traffic199 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 Rt Zz S over Wolf Den Br built?

It was built in 1964, making it 61 years old in 2025.

What condition is Rt Zz S over Wolf Den 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 Rt Zz S over Wolf Den Br carry?

About 153 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Rt Zz S over Wolf Den Br?

The structure is 29 ft (8.8 m) long with a longest span of 12 ft (3.7 m) and a deck 33 ft wide.

Who owns Rt Zz S over Wolf Den Br?

It is owned by the State Highway Agency.