US Bridges

Local - 700th over Trib Troublesome Creek

PoorPosted for load

Cass County, Iowa · 077351402 · Structure no. 000000000100721

Built
1983
42 years old
Condition
Poor
inspected March 2024
Type
Truss - Thru
Steel
Length
105 ft
1 main span
Daily traffic
11
2022 count
Owner
County
County Highway Agency

About this bridge

Local - 700th over Trib Troublesome Creek is a steel truss - thru carrying Local - 700th over Trib Troublesome Creek in Cass County, Iowa. It was built in 1983, so it is 42 years old, younger 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 11 vehicles a day, projected to reach 11 by 2044. The structure is 105 ft (32 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLocal - 700th
CrossesTrib Troublesome Creek
Location077351402
RouteCounty Highway 0
StateIowa
Coordinates41.47244, -94.85397
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating6 US tons
Inventory rating3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length105 ft (32 m)
Longest span100 ft (30.5 m)
Deck width20 ft (6 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2022)
Projected traffic11 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local - 700th over Trib Troublesome Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Local - 700th over Trib Troublesome Creek 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 March 2024.

How much traffic does Local - 700th over Trib Troublesome Creek carry?

About 11 vehicles per day (2022 count).

How long is Local - 700th over Trib Troublesome Creek?

The structure is 105 ft (32 m) long with a longest span of 100 ft (30.5 m) and a deck 20 ft wide.

Who owns Local - 700th over Trib Troublesome Creek?

It is owned by the County Highway Agency.