US Bridges

Laredo Ave over Unnamed Str

Fair

Macon County, Missouri · S 2 T 59 N R 14 W · Structure no. 17051

Built
1989
36 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
22 ft
1 main span
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

Laredo Ave over Unnamed Str is a steel stringer/multi-beam or girder carrying Laredo Ave over Unnamed Str in Macon 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 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 22 by 2044. The structure is 22 ft (6.7 m) long and 16 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesLaredo Ave
CrossesUnnamed Str
LocationS 2 T 59 N R 14 W
RouteCounty Highway 141
CountyMacon County
StateMissouri
Coordinates39.94358, -92.43091
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating40.7 US tons
Inventory rating23.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic22 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$162,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Laredo Ave over Unnamed Str built?

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

What condition is Laredo Ave over Unnamed Str 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 December 2023.

How much traffic does Laredo Ave over Unnamed Str carry?

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

How long is Laredo Ave over Unnamed Str?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 16 ft wide.

Who owns Laredo Ave over Unnamed Str?

It is owned by the County Highway Agency.