US Bridges

Shelter No I RD over Elm Spr Br of Mera

Good

Franklin County, Missouri · S 12 T 40 N R 2 W · Structure no. 25534

Built
1989
36 years old
Condition
Good
inspected February 2025
Type
Culvert
Steel
Length
21 ft
1 main span
Daily traffic
150
2023 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Shelter No I RD over Elm Spr Br of Mera is a steel culvert carrying Shelter No I RD over Elm Spr Br of Mera in Franklin County, Missouri. It was built in 1989, so it is 36 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 150 vehicles a day, roughly 1% of them trucks, projected to reach 270 by 2043. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesShelter No I RD
CrossesElm Spr Br of Mera
LocationS 12 T 40 N R 2 W
RouteCounty Highway 170
Coordinates38.20687, -91.09802
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadOther
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic270 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 Shelter No I RD over Elm Spr Br of Mera built?

It was built in 1989, making it 36 years old in 2025.

What condition is Shelter No I RD over Elm Spr Br of Mera 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 2025.

How much traffic does Shelter No I RD over Elm Spr Br of Mera carry?

About 150 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Shelter No I RD over Elm Spr Br of Mera?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m).

Who owns Shelter No I RD over Elm Spr Br of Mera?

It is owned by the State Park, Forest, or Reservation Agency.