US Bridges

Malden Trail over Allen Creek

FairPosted for load

Harrison County, Iowa · 080430404 · Structure no. 000000000178715

Built
1940
85 years old, rebuilt 1976
Condition
Fair
inspected November 2024
Type
Truss - Thru
Steel
Length
82 ft
1 main span
Daily traffic
40
2022 count
Owner
County
County Highway Agency

About this bridge

Malden Trail over Allen Creek is a steel truss - thru carrying Malden Trail over Allen Creek in Harrison County, Iowa. It was built in 1940 and reconstructed in 1976, so it is 85 years old, older than the Iowa average of 45.5 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. Its operating status is: posted for load restriction.

It carries about 40 vehicles a day, projected to reach 40 by 2044. The structure is 82 ft (25 m) long and 18 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesMalden Trail
CrossesAllen Creek
Location080430404
RouteCounty Highway 0
CountyHarrison County
StateIowa
Coordinates41.76912, -95.86101
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating17.6 US tons
Inventory rating10.5 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length82 ft (25 m)
Longest span80 ft (24.4 m)
Deck width18 ft (5.4 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2022)
Projected traffic40 by 2044
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Malden Trail over Allen Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1976.

What condition is Malden Trail over Allen Creek 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 November 2024.

How much traffic does Malden Trail over Allen Creek carry?

About 40 vehicles per day (2022 count).

How long is Malden Trail over Allen Creek?

The structure is 82 ft (25 m) long with a longest span of 80 ft (24.4 m) and a deck 18 ft wide.

Who owns Malden Trail over Allen Creek?

It is owned by the County Highway Agency.