US Bridges

Local over Drainage

PoorPosted for load

Montgomery County, Iowa · 073390301 · Structure no. 000000000256690

Built
1945
80 years old, rebuilt 1998
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
62 ft
3 main spans
Daily traffic
5
2021 count
Owner
County
County Highway Agency

About this bridge

Local over Drainage is a wood or timber stringer/multi-beam or girder carrying Local over Drainage in Montgomery County, Iowa. It was built in 1945 and reconstructed in 1998, so it is 80 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 5 vehicles a day, projected to reach 5 by 2044. The structure is 62 ft (18.9 m) long and 19 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLocal
CrossesDrainage
Location073390301
RouteCounty Highway 0
StateIowa
Coordinates41.15979, -95.32124
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating9 US tons
Inventory rating5.8 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadUnknown
Structure length62 ft (18.9 m)
Longest span24 ft (7.3 m)
Deck width19 ft (5.8 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2021)
Projected traffic5 by 2044
Trucks0%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$713,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Drainage built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 1998.

What condition is Local over Drainage in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does Local over Drainage carry?

About 5 vehicles per day (2021 count).

How long is Local over Drainage?

The structure is 62 ft (18.9 m) long with a longest span of 24 ft (7.3 m) and a deck 19 ft wide.

Who owns Local over Drainage?

It is owned by the County Highway Agency.