US Bridges

255th ST over Little Indian Creek

Poor

Sac County, Iowa · 088361903 · Structure no. 000000000046570

Built
1968
57 years old
Condition
Poor
inspected August 2023
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
928
2022 count
Owner
County
County Highway Agency

About this bridge

255th ST over Little Indian Creek is a concrete slab carrying 255th ST over Little Indian Creek in Sac County, Iowa. It was built in 1968, so it is 57 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.

It carries about 928 vehicles a day, roughly 12% of them trucks, projected to reach 928 by 2043. The structure is 26 ft (7.9 m) long and 48 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
Carries255th ST
CrossesLittle Indian Creek
Location088361903
RouteCounty Highway 0
CountySac County
StateIowa
Coordinates42.42226, -95.07237
Functional classRural Major 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 protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating64.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span23 ft (7 m)
Deck width48 ft (14.5 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic928 (2022)
Projected traffic928 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 255th ST over Little Indian Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is 255th ST over Little Indian 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 August 2023.

How much traffic does 255th ST over Little Indian Creek carry?

About 928 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is 255th ST over Little Indian Creek?

The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7 m) and a deck 48 ft wide.

Who owns 255th ST over Little Indian Creek?

It is owned by the County Highway Agency.