US Bridges

Arch Street over Rocky Run Creek

FairPosted for load

Bureau County, Illinois · W Center of Tiskilwa · Structure no. 006610100000000

Built
1925
100 years old
Condition
Fair
inspected July 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
75
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Arch Street over Rocky Run Creek is a steel stringer/multi-beam or girder carrying Arch Street over Rocky Run Creek in Bureau County, Illinois. It was built in 1925, so it is 100 years old, older than the Illinois average of 45.3 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 75 vehicles a day, roughly 27% of them trucks, projected to reach 76 by 2046. The structure is 30 ft (9.1 m) long and 16 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesArch Street
CrossesRocky Run Creek
LocationW Center of Tiskilwa
RouteCity Street 0
CountyBureau County
StateIllinois
Coordinates41.29374, -89.5114
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2022
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.1 US tons
Inventory rating33.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width16 ft (5 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2020)
Projected traffic76 by 2046
Trucks27%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Arch Street over Rocky Run Creek built?

It was built in 1925, making it 100 years old in 2025.

What condition is Arch Street over Rocky Run 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 July 2022.

How much traffic does Arch Street over Rocky Run Creek carry?

About 75 vehicles per day (2020 count), of which roughly 27% are trucks.

How long is Arch Street over Rocky Run Creek?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 16 ft wide.

Who owns Arch Street over Rocky Run Creek?

It is owned by the City or Municipal Highway Agency.