US Bridges

E 280 Ave over Rock House Lk

Good

Harrison County, Missouri · S 35 T 65 N R 27 W · Structure no. 29066

Built
1993
32 years old, rebuilt 2001
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
29 ft
1 main span
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

E 280 Ave over Rock House Lk is a steel stringer/multi-beam or girder carrying E 280 Ave over Rock House Lk in Harrison County, Missouri. It was built in 1993 and reconstructed in 2001, so it is 32 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 23 by 2044. The structure is 29 ft (8.8 m) long and 18 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesE 280 Ave
CrossesRock House Lk
LocationS 35 T 65 N R 27 W
RouteCounty Highway 222
CountyHarrison County
StateMissouri
Coordinates40.38888, -93.89889
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating85.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span28 ft (8.4 m)
Deck width18 ft (5.6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic23 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was E 280 Ave over Rock House Lk built?

It was built in 1993, making it 32 years old in 2025. It was reconstructed in 2001.

What condition is E 280 Ave over Rock House Lk 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 February 2024.

How much traffic does E 280 Ave over Rock House Lk carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is E 280 Ave over Rock House Lk?

The structure is 29 ft (8.8 m) long with a longest span of 28 ft (8.4 m) and a deck 18 ft wide.

Who owns E 280 Ave over Rock House Lk?

It is owned by the County Highway Agency.