US Bridges

Primm RD over Salt Springs

Fair

Logan County, Illinois · 1 MI S Lincoln · Structure no. 054301400000000

Built
1928
97 years old, rebuilt 1969
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
62 ft
2 main spans
Daily traffic
800
2022 count
Owner
County
County Highway Agency

About this bridge

Primm RD over Salt Springs is a prestressed concrete box beam or girders - multiple carrying Primm RD over Salt Springs in Logan County, Illinois. It was built in 1928 and reconstructed in 1969, so it is 97 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.

It carries about 800 vehicles a day, roughly 9% of them trucks, projected to reach 998 by 2046. The structure is 62 ft (18.9 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesPrimm RD
CrossesSalt Springs
Location1 MI S Lincoln
RouteCounty Highway 0
CountyLogan County
StateIllinois
Coordinates40.12564, -89.35827
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.1 US tons
Inventory rating43.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span30 ft (9.1 m)
Deck width31 ft (9.5 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2022)
Projected traffic998 by 2046
Trucks9%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Primm RD over Salt Springs built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1969.

What condition is Primm RD over Salt Springs 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 2023.

How much traffic does Primm RD over Salt Springs carry?

About 800 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Primm RD over Salt Springs?

The structure is 62 ft (18.9 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.

Who owns Primm RD over Salt Springs?

It is owned by the County Highway Agency.