US Bridges

Spur 312 EB over IH 20

Fair

Parker County, Texas · 4.2 MI W of FM 1884 · Structure no. 021840031407068

Built
1969
56 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
300 ft
2 main spans
Daily traffic
4,380
2013 count
Owner
State
State Highway Agency

About this bridge

Spur 312 EB over IH 20 is a steel continuous stringer/multi-beam or girder carrying Spur 312 EB over IH 20 in Parker County, Texas. It was built in 1969, so it is 56 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 4,380 vehicles a day, roughly 10% of them trucks, projected to reach 6,140 by 2033. The structure is 300 ft (91.4 m) long and 35 ft wide.

Location

Open in Google Maps
CarriesSpur 312 EB
CrossesIH 20
Location4.2 MI W of FM 1884
RouteState Highway 312
CountyParker County
StateTexas
Coordinates32.72661, -97.88039
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating28 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadH 20
Structure length300 ft (91.4 m)
Longest span90 ft (27.4 m)
Deck width35 ft (10.7 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,380 (2013)
Projected traffic6,140 by 2033
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Spur 312 EB over IH 20 built?

It was built in 1969, making it 56 years old in 2025.

What condition is Spur 312 EB over IH 20 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 September 2024.

How much traffic does Spur 312 EB over IH 20 carry?

About 4,380 vehicles per day (2013 count), of which roughly 10% are trucks.

How long is Spur 312 EB over IH 20?

The structure is 300 ft (91.4 m) long with a longest span of 90 ft (27.4 m) and a deck 35 ft wide.

Who owns Spur 312 EB over IH 20?

It is owned by the State Highway Agency.