US Bridges

FM 99 over IH 37

Fair

Live Oak County, Texas · 7.1 MI N of FM 2049 · Structure no. 161490007307225

Built
1978
47 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
320 ft
2 main spans
Daily traffic
3,010
2013 count
Owner
State
State Highway Agency

About this bridge

FM 99 over IH 37 is a prestressed concrete stringer/multi-beam or girder carrying FM 99 over IH 37 in Live Oak County, Texas. It was built in 1978, so it is 47 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 3,010 vehicles a day, roughly 23% of them trucks, projected to reach 4,220 by 2033. The structure is 320 ft (97.5 m) long and 36 ft wide.

CarriesFM 99
CrossesIH 37
Location7.1 MI N of FM 2049
RouteState Highway 99
StateTexas
Coordinates28.66332, -98.25451
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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 rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length320 ft (97.5 m)
Longest span95 ft (29 m)
Deck width36 ft (11.1 m)
Roadway width35 ft (10.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,010 (2013)
Projected traffic4,220 by 2033
Trucks23%
Lanes on structure2
Traffic directionTwo-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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was FM 99 over IH 37 built?

It was built in 1978, making it 47 years old in 2025.

What condition is FM 99 over IH 37 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 February 2024.

How much traffic does FM 99 over IH 37 carry?

About 3,010 vehicles per day (2013 count), of which roughly 23% are trucks.

How long is FM 99 over IH 37?

The structure is 320 ft (97.5 m) long with a longest span of 95 ft (29 m) and a deck 36 ft wide.

Who owns FM 99 over IH 37?

It is owned by the State Highway Agency.