US Bridges

FM 260th ST over Quarter Sec Run

PoorPosted for load

Bremer County, Iowa · 091132005 · Structure no. 000000000078920

Built
1939
86 years old
Condition
Poor
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
184 ft
3 main spans
Daily traffic
275
2022 count
Owner
County
County Highway Agency

About this bridge

FM 260th ST over Quarter Sec Run is a steel continuous stringer/multi-beam or girder carrying FM 260th ST over Quarter Sec Run in Bremer County, Iowa. It was built in 1939, so it is 86 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 4 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 275 vehicles a day, projected to reach 275 by 2043. The structure is 184 ft (56.1 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM 260th ST
CrossesQuarter Sec Run
Location091132005
RouteCounty Highway 0
CountyBremer County
StateIowa
Coordinates42.67326, -92.41045
Functional classRural Minor Collector

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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating23.1 US tons
Inventory rating14.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length184 ft (56.1 m)
Longest span70 ft (21.3 m)
Deck width21 ft (6.5 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic275 (2022)
Projected traffic275 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$2.1 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 260th ST over Quarter Sec Run built?

It was built in 1939, making it 86 years old in 2025.

What condition is FM 260th ST over Quarter Sec Run 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 April 2023.

How much traffic does FM 260th ST over Quarter Sec Run carry?

About 275 vehicles per day (2022 count).

How long is FM 260th ST over Quarter Sec Run?

The structure is 184 ft (56.1 m) long with a longest span of 70 ft (21.3 m) and a deck 21 ft wide.

Who owns FM 260th ST over Quarter Sec Run?

It is owned by the County Highway Agency.